Hey all, I have a question to all you PPC masters here. I would like to run a PPC campaign on my landing page (IM related) that offers a freebie for a sign-up. Quality leads that would eventually purchase something are key to this operation, of course. So I was wondering which PPC network works best. Adwords is off obviously because they don't let you advertise e-mail harvesting landing pages, next comes AdCenter which apparently doesn't mind, but what about the other, more cheaper alternatives such as AdBrite, ExoClick, InfoLinks etc. Do they allow landing pages? How about their traffic quality vs. price? Any info/help would be greatly appreciated. Thanks.