Of course I remember. For months I was earning $0 I think the problem was that I didn't had enough ..traffic!!
I earned nothing at all, even my first week was all 0, I got started with 0.76 for 1 click in about 10 days.
Can't remember. But why some of the people who responded are not earning any money with all the tools out there? (buy keywords, buy a good software to generate sites: track keywords where traffic is coming from and adsense channel to finally find a good niche,...)