For all those Twitter™ people here is something useful. Topsy is a search engine powered by tweets. It means that U can search tweets through this site.
This is great Bcause when U search on Twitter™, U get results on the basis of names, email ids & brands. But in Topsy U can get D actual tweets that U want 2 find. I have used it & it is quite something. It is still in it's BETA stage, so it'll get better by time.