You don't have to do anything, just update your profile once and grab the cash on a monthly basis!
Um, that was interesting. But how are you supposed to make sure that your campaign participants are actually advertising your service? If you don't set a quota couldn't it happen that they'd just sign up and not do anything here and still get paid? That would be a waste of your campaign fund IMHO.
i think what they are doing is just to keep related backlinks for the search engine to index their website. bitcoin related website that has links from bitcointalk can be index on top of the search results. but indeed at least require maybe a number of posts from the participants.
Yeah, noticed that the forum is high on the of the results when I search "bitcoin" even when I have cleared my browser's cache. Still, if for some reason a participant suddenly became inactive after signing up, there's no guarantee someone would land on a page with that participant's post.
That's the right thing to do. Since this campaign don't seem to be picky on what the participants do, then at least let them know they need to have a certain level of activity per week.