Well, I noticed it, but was expecting an announcement from "da management" explaining why it was the next new big thing - although now I look into it, it's about 3 years old, so ancient
Seems a bit limited if the Wiki page is right, as you can't import Scifinder into it, which is a possible drawback as far as I'm concerned, though I suppose you can convert Scifinder format into something else
in situ, and then into Connotea?
S