Does your site follow the Google
not affiliated with Google Inc
Misleading or false information in your rich snippet mark up will result in lower rankings.
Too many links can overwhelm a user. Make sure every link has a truly good reason to be there.
Don't be mean. Adding viruses, trojans, or other badware to your webpages is a sure fire way to lose trust, traffic, and ranking.
Text is well understood by search engines, images are not. If you use images for important links on your page, they might not be understood or recognized as well as text is.
No one enjoys clicking on a link that seems to be exactly what they are looking for only to find that no web page is there.
Dynamic pages must be able to be understood by Google. They face special challenges which are described in this guideline.
Users hate being deceived. You hate being deceived. Google hates it too.
The if modified since http header lets Google know if your web pages have been updated.
Keyword stuffing is not only bad for your users, it is against the Google guidelines. Using keywords over and over unnaturally will not please your users.
It is very easy to add all kinds of content to Google. This guidelines tells you how.