Reducing spam and encouraging helpful behaviors in web 2.0 sites by pairing up users randomly.

Would something like that make sense?

Imagine for example on a social news site pairing up users randomly when they log in.

You would be able to see the activities of your partner in real-time. You could help each other and even report on each other in case of spamming.

Since this partnership lasts the entire session, you will feel some connection to your partner and a greater sense of responsibility in ensuring things go well.