Is possible that Google can throw out of certain search resalts a page

is possible that Google can abstract a search key word?

[george123]

My page used to be a few weeks ago under a certain key word on the top 10 results of Google and Yahoo, though I am in other search engines with the same key word at the top 10 and of course still at the top 10 in google but under other key words, I wonder because the subject of the page is very commercial as the main key word, is that possible that antagonists have hired hackers or pay some kind of SEO companies to abstract my page from certain key words at Google?
I will appreciate any help
thanks in advance
George

[troels nybo nielsen]

Welcome to WebmasterWorld, George.

Google changed their search algorithm recently. I hear that quite a lot of websites were hit rather severely by that change. Your description seems to fit rather well with what other webmasters tell. I don't think that you should worry about the possibility of sabotage.

[george123]

Thanks very much Nielsen.