I found out about blekko, a new search engine in limited beta, at SMX East a couple of weeks ago. In addition to picking up a bit of wearable schwag from them, I also took home a login account, though I have just recently had a chance to start experimenting with it. My initial reaction was to be not so excited. "Who needs another search engine?" Even after listening to the guys in the blekko expo booth as well as hearing their representative participate in a search discussion panel along with representatives from bing and Google, I wasn't motivated to immediately start playing with their new service.
The problem they face is that there does not seem to be a large volume of those dissatisified with the state of search. On the contrary, consolidation of search has occurred with the remaining large players, Google and bing, still working on innovative features. Ok, "instant" may not be revolutionary, or even helpful in some case, and I don't use bing enough to know if they are doing anything innovative, but I still have not recently suffered from the inability to find utility from the SERPs that I see.
All of that said, they are worth checking out for some novel features - some of which I would suspect that Google or Microsoft could implement rather quickly, and others that I doubt we'll ever see from a major player. So let's look at those: