Originally Posted by SenSEO

I had some good experiences with their campaigns, here some of my results:

Rodox Retro Style: 4509 4431 21 211
Rodox: 2793 2707 9 301
Excuseme Portal: 2113 2049 19 108
Jim Slip (Tour1): 1795 1758 6 293
SeventeenVideo: 5006 4897 17 288

Resp.: site, clicks, uniques, sign-ups, ratios (on uniques)

Of course the more specific keywords you choose the better!!