Yesterday I've added the square to my content-website (very much content). I got a CTR of 4.94% but google only pays $0.99 for 30 clicks. That's fraud! I used to get at least $0.10/Click
Three cents a click. Hmm, that's low, but you know, it's not unheard of. What's your field? That usually has a lot to do with how much you get paid per click.
Maybe someone has chosen to display on your site using the 'pay per impressions' mode? Do you have that option enabled in Adsense?