Google uses this filter at the moment - nobody even doubts it! Google applies this filter if suspects that webmasters use spammy techniques while doing search engine optimization. What can be these spammy techniques?

First of all, spammy SEO-techniques can be abuse of java-scripts especially in links-schemes (java-scripts redirects); doorway pages that just drive traffic to the web-site; keyword staffing and other blackhat seo schemes that can affect your website and your rankings can drop by 30 spots.

Massive links-collecting can also affect your rankings and you can also be caught under this -30 filter. Checked on myself Too many identical links in a short period.
If the filter has been applied to your web-site - you still can improve your state! Reconsider the seo-strategy and find out the elements that can be seen spammy in SE’s eyes. If you have understood what could cause this filter and what needs to be done to improve your rankings - do it!!! Do not waste time hoping that “Google will start valuing my web-site at last”!

After you think you have done everything to qualify for the “top-placements” you can send a “reinclusion request” to Google.

P.S. The thing is that I’m not sure that some white seo-methods can not be ascribed to “spammy techniques” in Google eyes

Technorati Tags: -30 filter google, reinclusion request, seo, spammy techniques, java-scripts

You positions have dropped much? You can’t figure out why this happened?

Just a small tip for you to differentiate a real penalty from just fluctuations that are very common nowadays, especially in the Update-time:

Imagine that your web-site sell toys of different kind. You have always been on top for the following phrase (just an example) “buy fluffy toys” - let’s say 5th place. And the second high-frequent keyword has been “buy fluffy toys cheap” - 2nd place. If suddenly you became 55th for “buy fluffy toys“, your other keyword should be something like 28th in Google as you definitely have more anchors like that, much density and overall the competition for such a key-phrase is absolutely different. Otherwise, if “buy fluffy toys cheap” became 52nd - welcome to the penalty world and get down to the web-site in order to find out why Google has “awarded” you
Just a tip that doesn’t carries a lot but may be of help to someone.

P.S. I just saw this happening to some Globalwarming awareness2007 participants

Technorati Tags: 950 penalty, google update, Globalwarming awareness2007, high-frequent keyword