One of the filters that can be easily tackled is the filter on identical link anchor text on all incoming links. Failure in this area makes it obvious to the search engine spiders that the anchor text is not generated naturally rather created artificially. Spiders recognize that your anchor text link is trying to be manipulative to gain higher Google pagerank and link popularity.

The solution to this filter lies in fairly open books, all you have to do is to bring in variety and mix up your anchor text wordings. Variation in keywords and site title should easily lead you out of this problem. Your wording should not use more than a maximum of 80% of your regular link text and should include at least 20% of substitute text.

Bringing in variety in your anchor link text will make bring in proven benefits. It will also show the presence of a wide range of incoming links that can possibly add up to your backlink counts and hence search engine rankings.

Links.htm natured pages seem to play a certain significant role in triggering filters of its own. Normally these links.htm pages that virtually contain all the outgoing links of a site seem not to be given any credit by search engines neither for their own pagerank nor for backlink credit for their linking partners. It not only gain any credit it also triggers a filter that will penalize your site.

One of the efficient ways of getting over this problem is to rename your links with entirely different names and completely avoid using the word "links" in your naming. Another effective way is to thematically segregate all the available links and distribute them among various pages of your site. Third way to go about this problem is to provide brief description of each link and its thematic relation to your site.

There is some evidential fear that reciprocal links bring in the peril of Google filters. But SEO professional rule out this fear as unsubstantiated fear as blogs that is packed with reciprocal links seemingly does not suffer any such ill effects or problems on backlink totals or loss of pagerank.

Whether it is true or not one will be on the safer side by keeping a positive ratio of incoming one-way links. Blogs certainly employ this technique and does not give a second thought on reducing their reciprocal link density.

It has been observed that cross linking between too many sites within the same server in particular when it belongs to the same c level block. By 'c level block' it has to understood that it is the third section of the website address.

Eg: 123.123xxx.123.xxx

A speculative value posed seems to be 20, that is when the number of linked sites crosses the threshold of 20 it is believed that it activates a filter. However, the figure posed is just a speculation and is not based on any proven statistics.

The obvious solution to this problem is to avoid reciprocal linking with many sites that have a common host. Best linking pattern seems to be triangular linking pattern, link A to B, B to C and link back C to A. All the other linking patterns have proven to be fatal. All that is needed here is exercise of little caution.

Over optimization filter is not a single filter, it is rather the saturation of a number of triggers. Though no one is certain of the existence of over optimization filter, there are strong evidences to this effect. A classical example of this is to be seen in the infamous Florida update and the later Austin update. Overuse of h1 and h2 tags, keyword stuffing seem to be creating all the problem.

Most competitive keyword zones seem to manufacture the problem of over optimization filter as the competition increases, so do the spam laden keyword phrases. There should be moderation in the use of keywords in their content, under no circumstances it can exceed the cut off limit of 3%. The best way to go about this problem is to write naturally as it would be doubly blessed. It will keep you off from over optimization filter and it also will be beneficial for conversion rates to your sales. Be diligent in the use of h1 and h2 tags. Ensure you provide every page with a unique title tag reflecting that page's content.

New incoming links seem to invite triggers, even if it does not bring in filters on your site it at least brings in the sand box dampener effect on your site. A new site that receives fresh site bonus from Google and rank high, will as a follow up phase undergo a drop in search rankings. This is when the so called sandbox attack a site occurs.

Once in the sandbox, it is going to take your site two to four months to gain a respectable position in the SERPs. No amount of inbound links are going to come to your aid during this phase to help you rank better. Gaining too many links rapidly seems to be one of the reasons that trigger this sandbox effect. You can also over come the problem of sandbox dampener by building up a domain in advance with incoming links before the original launch of the site.

It is not all search terms that seem to be filtered by the sandbox, only keywords in the most competitive zones seem to be filtered by the dampener. You have to over come the problem by having a virtual launch of your site at a time much earlier than the planned launch. This is to give time for the dampeners to be removed from the site on the real launch with real content.

Sites with large number of pages with similar content will invite filters on your site. All the pages should be differentiated in terms of content, keywords and page titles. Duplicate content filter seem to extend its scope even to affiliate sites with similar and duplicate content.

Constant updating of the pages with fresh content and the usage of unique page titles that would match the page's content are possible solutions to face duplicate content filter. This should also fetch you some bonus points from the search engines for fresh content.

The scope of all discussion on search engine filters can go only as far as speculation. However, it is beyond doubt that search engine filters and dampeners are in existence.

Some of the effective ways of escaping these filters as noted in this section include, mixing up of your link anchor text, to use natural style in writing your content, reduction of keyword stuffing, shun duplicate content, avoidance of any and all manipulative techniques.

Sticking to honest search engine optimization will on the long run will save you from all dreaded filters possible, both real and imagined.