I had an entirely different experience with them. While they aren't on my A List, I would run more campaigns there. Actually, I started one for a client there a few weeks ago that has been successful. My only problem is because they pull from so many different 2nd tier feeds, i would often find myself competing against my own ads from other 2nd tiers that their feed had pulled in.
We are pretty fast when it comes to blocking any fraud attempts but if something like that happened please provide me your ExoClick username (via PM) and we will refund you each click that was not natural. I believe the person who sent you these clicks is already blocked but we will check that too.
I think they are offering very low payouts for click from the search box as compared to Google Adsense!
Anybody's have news about exoclick? I put 10$ last week for running one ad, and my ad dont run yet. Live Support was alway's Offline and they dont reply to my email.