I was testing the theory that if you used a picture that forced an emotion you would get masses of clicks. The reason i used CPM was because i wanted to see if i could achieve a very low CPC using the CPM method. Here is the Advert i used.. Firstly, i targeted a select group of people, so if you do not get the picture i was not targeting you.. Now, when setting up the advert the CPC was £0.23 - £0.34, i went for CPM and bid £0.29 per 1000 impressions. This was what the advert achieved.. If i had used CPC this would of cost me £467.13 - £690.54 for those Clicks. As you can see by using CPM the clicks cost me £0.003 which to the Americans is $0.004 per click. So yes it is possible to achieve less than 1 Cent per click, if you find the HUNGRY market who feel strongly about the advert you use. If I had sent the clicks to a $9.99 product, A 0.05% conversion would of covered costs.