Two things. ONE – If you have old homework lying around, you can sell it to students for $. You make 80 percent of whatever you sell it for. 85 if you sell a lot of it. Once there are lots of people, this percentage would go down to 60. So it would be best to sign up ASAP ☺ TWO – you may ask your own homework/academic/whatever questions, and they would be responded to, by peers and experts. You pay when you buy a solution someone posted.