Collecta searches in real time for your topic. It includes Blogs and Twitter text into your search.
Collecta will continue to look for your topic until you tell it to stop by deselecting the search box. I didn't understand why it kept updating the search after I finished it or went on to another topic. It was like the little engine that could.
The Preview panel allows you to see the content and you can click to visit the source. Here is the neat part; under search options you see the following:
Searching for comments is interesting because I have found good links and resources that way. I also like the video search aspect but I would like to choose different video distribution sources like Daily Motion, Blip.tv and other similar sites.
This Is A Keeper
Collecta is still in Beta so when I performed a search on "library classification systems" I got results from programing languages, game players terminology and other not obvious classification connections, in addition to library blogs.
Currently there is no way that I could find to restrict the search area; for example I can't tell Collecta to search only Wordpress blogs or only blogs that have "library" in the title.
At this point I think this is a good alternative for Google Blog Search and it can be used as a supplement to other search engines.