I wasn't questioning why advertisers would use PPA, I was questioning why so many new advertisers seem to surface so fast. I've been checking the PPA ads about every week and all of a sudden there seems to be a lot of new advertisers.
Yep. As I've pointed out previously, I think a big part of that is the landing page issue.
PPA is basically like an affiliate program and good affiliate programs can work to the benefit of both publisher and advertiser.
Advertisers have to learn how to get the sale on the landing page and offer an appropriate compensation to the publisher. Otherwise, they aren't going to get traffic from publishers. The chicken has to come before the egg.