Are there any other sites out there like Mylot?

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I like this being paid to post business, and I'm just curious if anyone in their internet travels has come across others? The only other thing is do is the getting paid to read e-mails, and that for me, is going to take forever to reach payout, they only payout at 30.00 and pay .2 for every e-mail clicked/read, but it's free money when I have nothing else to do, so why not, right? Do you guys have much success with these things? It seems like you only do really great if you get a lot of referrals? I'm not sure, just looking for a bit more insight, though.