Daily Archives: March 31, 2010

Google seems to apply the -30 filter to web sites that use spammy SEO methods. If Google finds out that your web site uses invisible text, JavaScript redirects, doorway pages or similar spam techniques then your rankings will drop by 30 spots.

The Google bomb filter seems to be applied to web sites that get too many identical links in a short time period. If a web site gets many links with exactly the same link text then Google will downrank the page because such an unnatural linking behavior indicates a manipulation attempt.