Well from our point of view as a company we have and continue to run both types of ad in conjunction with each other where possible.

As you have mentioned though it is a delicate game of balancing the numbers whilst you may be able to make $200 in one hit by selling a paid spot, the revenues generated by that spot had it been an affiliate link also need to be taken into consideration.

This is actually one of the reasons why we keep stats reports for all of our sites, webmaster and surfer orientated, this gives us a good 'base' on which to evaluate whether a spot should be sold or should be affiliate at any given time during the month / year.

Good question too

Regards,

Lee