Google via Matt Cutts say about new ranking factor in 2010! Google indicate that Speed is become something important for improving ranking in Google Search.

Matt Say..

“Historically we haven’t used it in our search rankings, but a lot of people within Google think that the web should be fast, it should be a good experience and so it’s fair to say if you’re a fast site, maybe you should get a little bit of a bonus, or if you have an awfully slow site, maybe users don’t want that as much.”

A little bit bonus is for you if your site, more faster then other site :), so by now be careful to choose your web hosting provider, becouse it can affect your website existent in Google Search listing.