I joined InboxDollars a while back but did not really do anything with it.
I realized that it was really easy to earn some cash from this program. I just clicked the link on the e-mail I received. Occasionally, I signed up with the program they recommended to me and got more cash back. They will send you a quite few e-mails. If you keep clicking, you will earn enough cash with no time.
As of today, I've earned $54.06. They will give you $5.00 sign up bonus.