I paid the $35 for project payday to see what it was all about. It's not a scam really, but it's very tedious work and the whole offer thing kind of sucks like you mentioned. I tried them for about a month and made alittle bit of money but I've since moved on. You asked about more info on project payday, I wrote a very thorough review on them at
squidoo.com/project-payday-reviewed