Om Malik is writing about his early impressions of a new blog search engine called Sphere. I’m an advisor to Sphere and excited to see that they are about go beta. Back at Oddpost, shortly before we got acquired by Yahoo, we were working with two guys, Steve Nieker and Martin Remy of ThinkTank23, who were going to help us with feed search and discovery for our RSS reader. I really liked them and their technology, but we never got to build a product together because of the acquisition. I thought the least I could do was introduce them to one of Oddpost’s lead investors, Tony Conrad. It turns out the three of them hit it off and started Sphere together with the goal of building a second generation blog search engine (one that can tell you what authority a blogger has on a given search topic, rather than just list everything that’s being said in the blogosphere). I’ve been very impressed with their product to date. If you use blog search frequently, please sign up for their beta. They are looking for people who are able to tell the qualitative differences between various blog search results.