How do people make money using Google Adsense on their websites?…I know its usually pay per click, but do people actually click on the ads in various websites. I mean, what are the chances that someone would actually click on some ad on a website that they are visiting?

I wanna to start a blog of my daily struggles and how hard it is to be an adult entertainer.. is this a good idea. how do i find out whats a good idea.. the one i started is called real life struggles.. i just need some advice.. what would be a good blog how could i find out whats hot right now

Or any idea when yahoo is going to start such?