From what I have heard they are ok payment wise (haven't used them myself though), but the do have a long list of countries which they won't pay you for, though some of the other search programs are similar in that respect.
yeah, I've seen that list. Pretty long, but like you said, that's not unusual. I can always filter this traffic elsewhere. What I like is the fact that you can customize everything, which means you can create something like your own targeted landing page.
yeah they look ok generally though, you may also want to check out searchprograms.com if you haven't seen it before, has info on most of the main programs. The traffic filtering idea is an interesting one also, I guess you just do it by ip?