Google the great search engine (don't pay attention to the man behind the curtain) released today
Google Blog Search.
All you have to do is type in something to search for and *!BAM!*, you can see where people have posted about the search word.
Kind of cool.
A little bit scary.
I found myself on the first page searching for one of my interests.
I may be a little creeped out.
I may be typing in more words to see what I find.