differene between CPM and PPC

[tom]

that shows we can earn money easily in CPM than PPC. 1000 impressions are not hard to reach, but what about the price for it? and is it allowed autosurf or manual surf?

Some sites allow traffic exchange site and some sites does not allow those sites. Well it totally depends on the site rules. You need to check them if you want to use traffic exchange sites.

I dont think good publisher site allows autosurf site or manual traffic exchange traffic they will easily detect the source of traffic.