CPM or CPC, what's best for signups?

[nickdime]

Which type of Ad network do your prefer CPM or CPC? What gets more signup's for any kind of project at hand?

[brian]

Although it depends totally on the project at hand. But I will suggest that if you have a low budget for conversions then go for CPM. Because no matter how much CTR is or how many signups do you get you still have to pay the same amount of money for impressions per mile.

[ksmith29]

I think CPC is better. You only pay for those who actually clicks.