well, I got a hang of thie new and exciting service, and beleive me its good fun.
You score each time someone answers your question. You can also score by number of ways.
You can ask questions, answer questions, rank the answers, good fun.
Do try it.
you can visit the blog here

PS: On weekend I read the news how Yahoo is trying to save itself in the war of Internet between MSN and Google. I think if they continue doing things like these, they will certainly save themselves.