I have decided to advertise on about 10 different websites with Adsense. Should i spread my money equally between these sites and run the campaigns at the same time, or should i focus on one site at a time? If i focus on 1 site at a time i will probably find the site that has enough ROI for my advertising without spending money on the other sites. What do you think?
I assume that you are talking about site targeting campaigns (CPM) on adwords: the best is to research the more sites possible one by one and add the more sites to the list you can - try to add 200 sites to the list - yes this is the number: 200 not 10. It will hurt on beginning but if you have 200 sites on begging you can compare the results (best conversion and best CTR%) and eliminate the poor performing sites along the time.