Gotta say I've lost $100 yesterday on 7search traffic and I won't use it anymore. Got one $1 conversion from it THOUGH!
Ouch! Sorry to hear you had a rough 1st go with 7search.com traffic. Question - have you ever touched base with a member of our new advertiser training program? Now, I know that you have ppc experience so please don't take offense. It's just that we have a team of account representatives available to provide tips on how to best position your ads to succeed on the 7search network.
We also can provide you with a affiliate/referrer tracking parameter to add to your tracking URLs. This will pass the actual IDs of our partners to your tracking and allow you to block these sources from within your account, optimizing the traffic you do receive.
I would definitely be willing to "talk shop" you with you to see if we can help bring you back on board, and more importantly, help you become profitable quick. Shoot me an email at cleo@7search.com if you are interested.
Best,
Cleo