Google does all sort of things with search and one of these things are realtime search. It was introduced last December but remained in the back servers of Google but accessible to anyone who wanted.
Today Google Realtime Search is getting it's own page and will allow all of us to search through the realtime content from sources like Twitter, Friendfeed etc.
There are many refinements that you could add to your realtime search and it is not hard work at all.
Instead of reading about it, you should try it. If the page is not showing up yet follow this link to see how it is coming.
You can also read more and see a video by following the link below.
Official Google Blog: Google Realtime Search: a new home with new tools