Much of the SEO industry continues concentrate to link building or getting links to improve SERP visibility.. There is nothing wrong with that. Of course there are limits. At present there are many traps for link building has to be very accurate when it comes to following the Google webmaster guidelines.
Thousand links for $ few dollars - dubious offers of spam that offers Thousand links for $ few dollars is too good to be true. They almost directly to a penalty.
Paid links on high PR sites - As you can get away with paid links in many cases it is very easy to make they known to buy links on high PR sites called the Page Rank toolbar is 6 or more. There are only a handful of sites that have PR9 and even the number of Page Rank 8 site is easy to control. Sites PageRank as Piwik. org with a ten are so obvious that Matt Cutts could call and talk to yourself.
Reciprocal links - link exchange and reciprocal links are natural, to some extent. I can link to bloggers who link to my day to day. On the other hand, plans and massive clear link exchange or networks can be detected by algorithms, so you end up punished sooner or later.
Hidden links - these days many of the best free-range are scams SEO WordPress themes that are based on hidden links in the topics to be spread around. If you depend on those links for "link building", no wonder they are being punished. Some visitor counters have in the past as well.
Profile artificial link anchor text always coincide - when every link to your site is well optimized saying something like "SEO company" this may seem too artificial to go unnoticed by Google.
Incorrect links of different languages - An English site with thousands of links from Russia or China makes me go hmmm. Google engineers are smart enough to compare the language of your site and other sites link to you. In the best case only in the range of Russia and China. Another thing to drop it altogether.
Gaining too many links too fast - not always the more links the better. Even with good connections won too quickly can result in a fine. Google is controlling the speed of connection - also known as the speed at which you make changes - and if you get more links than you deserve, you risk a penalty, even if the links are perfectly legitimate.
Exit links
Linking out is crucial for blogs and websites, even static. Many webmasters likning stopped PageRank to treasure. Google engineers have discouraged and suggested this place instead. Linking out can be risky though.
Broken links - greater number of the broken links for a page to raise a red flag in the Google algorithm. This may not be a penalty in the strictest sense, but he suddenly falls in the rankings once more than one or two bonds are broken on a page.
Links to bad neighborhoods - even worse than the error 404 (also known as broken links) are links redirected to the so-called bad neighborhoods. The spammers even use this technique with the intent to deceive. Most of these connections happen more naturally, as part of the decline link. Sites away and buy domain hoarders to display ads charged "domain parking" pages.
Many outbound links or none at all - a site that has more outbound links that may be lost content search visibility. This could not happen overnight as the typical punishment was to be expected, but may amount to one of its effects. In addition, sites that are dead ends (that do not link out at all, or use the links use nofollow mistaken belief that it is good SEO) may be penalized altogether.
Links hidden in third-party services (menus, widgets, counters) - free services for websites often have a beating business model. Slip in a hidden relationship with your offer. CSS can be a menu, a sidebar widget or a counter. Sometimes these links are not only hidden but also are off-topic and spam outright. Look out and see the source code for things to add to their sites. Google, of course, does not allow hidden links.
Content
Although Google always insists that "content is king", but can also be a problem. If there is no king in his kingdom or the king is dressed in rags that look bad when Google bots visit.
Duplicate content - duplicate content on your own site or elsewhere can result in a significant drop in ranking. Although Google does not consider this a shame, most webmasters who do experience the problem.
Low quality content - Google Panda update high call quality focused on low-quality content. Superficial, keyword rich content of some pages can make your entire site drop at Google.
Scraped content - scraped content, a text taken from other sites and displayed on its own, is a sure way to get downranked.
Cannot read the content - content that is written in broken English can be viewed as scaling and then "Spun" (some words are replaced with synonyms to fool Google), so make sure that a human being understands what you write . In addition, the text decoration is essential. Quality human raters used by Google to check that too.
Ads
Analysts argue that Google is a search engine, but an advertising company, as almost all income from the mother corporation of Google ads on the search results themselves and third party sites. However, the pressure on Google has grown in recent years to address the problem of the AMF call (Made for Adsense) sites that pollute the Google index. With Google "Panda" the search giant finally did it.
Too much publicity (containing less than the proportion ads) - since Google "Panda" has been the talk of the town, most experts have pointed out that a too high number of ads, especially Google Adsense ads, can result in a penalty. I agree with that view.
Affiliated sites worthless - Google always explained that members are fine, but only as long as they offer additional value beyond the actual affiliate offer. Be sure to add value, it will face a penalty, sooner or later.
Bad press and reputation
The issue of so-called "SEO exit" has been hot in 2011, numerous high profile websites have been sidelined and with them their equipment or SEO companies. Many SEO practitioners argue for moral reasons that output is a despicable practice. May be right, but as long as there's nothing going better. So it is better to manage their reputation and occasionally check out what makes SEO team.
New York Times and the Wall Street Journal - high profile in the media old media like the New York Times (New York Times) and the WSJ (Wall Street Journal) as to shock SEO, so if you receive a call from a journalist might not boast of his shadow SEO tactics. Google, in most cases, responds to high-profile departures aka bad press.
Blogs of the industry as SEO Book - some blogs SEO industry could focus his attention on his shadow SEO business model when you get too fancy or disagreeable. Aaron Wall of SEO Book was offended by what the "SEO is bullshit" owner Calacanis Mahalo diatribes that attacked your site to the sites. Google finally had to act, and penalizes the site content thin, along with other criminals in the Google "Panda" update. Be sure not to slander the SEO industry online if your property is not 200% clean.
Ask questions in the Official Journal Google Groups - some disgruntled webmasters tend to talk in groups or forums for Google when they feel they have been identified and punished. Some of these webmasters have been penalized for good reason. These people will be discovered by Google employees at the worst if not admit their mistakes and continue to complain.
Making Google look stupid - do not need a NYT article, an employee of Google SEO blogger or penalized for a bad reputation. Publicly showing his black hat SEO success makes you vulnerable to "making Google look stupid" penalty. Major SEO specialists agree that from a certain point on, Google cannot keep quiet about it and be penalized in order to keep your face.
Google filters
Google penalties are some filters that are applied automatically. While many penalties can be both manual and automatic, some of the filters are clearly algorithmic.
New domain (sandbox) - the so-called sandbox filter has been for years, but was never officially recognized as far as I know. It applies when changing domains or start with a completely new domain and site. Without proper "moved to" Google sign this penalty applies to old and established sites when switching domains. Use a 301 redirect to sites old and trying to win a significant number of links from the authority in the early days of a new domain to defeat the filter.
Several h1 tags - a book has a single title. Similarly, a web page has only one H1 title tag. Google assumes that several H1 tags are a trick to make your spam index, and penalizes sites that use multiple h1 tags. Use h2, h3 and other labels starter in his place.
Keyword stuffing - one of the oldest techniques of spam is called keyword stuffing (high "keyword density"). Today, false SEO specialists advise webmasters to ensure a high "keyword density" in its place. That is nonsense. Be sure to add keywords to your copy of the website, but no more than a couple of times. It is more important to keep the text easier to read than any percentage of keywords. Rather, it could hurt Google.
Technical issues
Not the entire sudden drop in SERP ranking and traffic is bad, some are stupid or gross neglect. You can shoot in the foot by playing with some technical aspects of web development.
Robots.txt - the robots. txt is not really necessary to improve SEO. You can break a lot of things though. I recently blocked one of my blogs to be indexed by Google. Of course pain is suspected at first, but then checked Google Webmaster Tools to find out who committed the error.
Nofollow - I've seen blogs excluded from the main Google index, because it activates WordPress privacy mode. Just wanted to say that all of the blog was created to noindex, nofollow equivalent block in the robots.txt.
Duplicate titles and descriptions - that the site uses the same or other evidence of similar page and description for each page, it is not surprising that most of them do not show up in search results. This sanction is not just anyone. It is only logical.
Sinks links in JavaScript - JavaScript menus are still out there site you cannot get crawled by Google. Always check if your actual use HTML links menu with " "on it. Or at least the full URL should be supplied.
Periodic Change of the Google algorithms
In some cases the loss of the classification or search traffic has nothing to do with you or your site. Another thing that changed in place and that is why it beat all of a sudden.
Change in the algorithm - Google changes its algorithm and refines all the time. The main changes are caused to dramatic changes in the search results. Just search for "Google Panda." The only thing you can do is find out what has changed and why your site does not coincide with the new factor of the algorithms updating.
The competition is better - a common "problem" is that your competition does more SEO work you do and that one day you fall over. A change in ranking from # 1 to # 2 on Google can be a loss of traffic from 60 to 80%.
Current Events - sometimes breaking news can push down your site. Google News results shown in the top, and less competitive news media begin to rank sentences consistent results. Most of these changes disappear ranking ofter a couple of days.
SERP show the change - Google experiments all the time with the search results screen. In particular, the local results from Google Places remove much of screen space. You may be placed at # 1 in the organic results and still get to the bottom of the page of results.
