I say same ! Dont try only if you have lots of published posts and you get lots of traffic then maybe. When it comes to PPC try Adsense ....
I've tried them and I just got my first payment for $56. They don't pay a lot but if your site gets like 500´000 visitors a day you could make a living from it. Some days I get $7 CPM, other days I only get like $1 CPM rates.