I ran into a task (32 pts) where it had part 1,2,3 and then the same exact part 1,2,3 right after. Is that an accuracy test or..? I'm using chrome if that's relavent. Also another task's instructions, I think a 'is this a good image advert' one, tried to imbed a pdf as an image and it didn't work so I had to view source on it.

I also think it's a bit weird to automatically send you on to the next task without telling you. People like knowing they completed something before they have to start the next task.

I also think it'd be cool (and good business) to have a leaderboard like system where you show "Look at all the BTC other people are earning!" so more people get involved.

You could use the new 'sign message' feature in .6.0 to have people sign a message saying "I own this public address and coinworker.com can use it to identify me" and then use the verification address as a password or something, and let them use that to set their payment threshold.