So far, I'm quite impressed with it. It seems to have a similar niche that Yahoo Answers has. That's my first stop when I need to ask a question. I think that Blurtit needs to mould it's niche around the community aspect a lot. Yahoo Answers obviously has quite a strong sense of community, with points etc, but its so huge and spammy now (plus the trolls are everywhere!) it's hard to sift through the rubbish and find the quality.
I would like to see Blurtit become a place where quality information can be found, as well as a stronger sense of community. If the sense of community comes first, above all else, and becomes the very core of Blurtit's ethos, then it will have a distinct advantage over Yahoo Answers, who have forgotten the quality control of their community.
In terms of my role, I would like to be a member who is considered reliable source of information, as thus be one of the members who is the first port of call for answers. I manage communities on G+, so I think I would like to help in community quality control too.