I tried to sign up with Tik Tik Cash. However as I am not based in the states, they will currently not approve me. I guess they can be ok if you are in the States but not if you are in the UK.
From what I gathered, they do surveys, games, get paid for reading emails and get paid for refering friends.
If you are in the States, you can sign up and let us know what you think. If you live in the Uk, you can sign up and when they are accepting people in the UK they will email you to let you know. Or watch this space and we will let you know when they are accepting people. If you live elsewhere, do let us know if they accept you or not.