The whole time I've been a member of PayPerPost, I've only received two tasks. They were easy 50-word posts so I wrote them anyway. I got paid $2.25 per post. I decided to try cashing out my earnings manually because I don't think I'd be able to wait for their $50 cash out and was deducted $2, which totally sucks.
Anyhow, I don't know if I'd write again for PayPerPost. Probably not, that's why I withdrew my earnings already.