I've been using Inbox Dollars for awhile now. I received my first check in the mail which got me completely excited! I just love seeing things pay off. With Inbox Dollars you get paid for reading emails, completeing offers, and doing surveys. It's really super easy and it doesn't take all that long for everything to add up. You also get $5 just for signing up!
If you do Inbox Dollars you should probably do their sister program Send Earnings. It's basically the EXACT same program, even with some of the same paid emails. So when you sign up for Send Earnings it's really like you're getting paid twice! Be sure to check both of these out!