A feature: Helpful/Friendly (Jeddah)

I think there should be a feature, if someone helps you out you would click on his/her post to give him points. It's not about competition, it's about finding more reliable people around, and encouraging behaviors that makes Internations what it is. For example, you get little points for posting and being active, you get more for giving useful information or attend events (actually attending) or even hosting ones. If you host one, you should complete the event by confirming who actually showed up, and reward them for their activities (zero for not showing, even MINUS if did clicked attendance and not showed up, they should remove their attendance, if they participated in conversations/discussions they would get more than a silent person)

What do you all think?