The mostly interesting thing in this tread is that question from "newbie" about trust have 50% replies also from "newbies".
And i'm as well =)))
So to my opinion "trustable" into the forum near the same as in real life. Should be. I mean first of all not "score" but reality. And it's very interesting for me as well that "score trust" could be equal to "real trust". Especially if we are all talking about anonymity at the same time.
But in fact it could be =)))

So be active and good luck!