Im interested in trying this for my colon cleansing product I figure a free $100 I can't argue, any of you had succesful campaigns from using facebook ppc? Myspace?
I used $250 in free coupons they were giving away some months ago, and got some visitors, but if it was true money the return of investment wouldn't compensate. BUT the results may be skewed because with free ad money, cpc and cpm skyrocket, so your ROI is different.