I need your comments, please.

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I have just registered with the following sites and I have a few concerns regarding them: 1. extra10 - There seems to be an error with the site lately because the last time I clicked their ads was about a week ago, but until now the ads are shown to be striked through and naturally, I couldn't click on them. Is anyone familiar or a member of this site? 2. wordlinx - I got interested on this site primarily because it pays through Paypal so I registered with it. But I forgot to check how much is the minimum payout and if this is available to countries outside the US. What's your experience with the site? I'm quite interested to join the sites indicated below but I'd like to know the basic facts about them particularly; 1. payment facility (Alertpay, Paypal, or check), 2. available for non-US members, 3. minimum payout, 4. legitimacy (scam?)&/or proven track record/proof of payment, 4. other useful info. a. unobux b. cashcrate c. GPT survey d. buyrealvisitors e. onedollarptc f. twodollarptc g. adpaid h. expresspaidsurveys i. instantpaysites j. cosmopal If they are proven to pay even standard or basic members, I'm willing to be anyone's referral as long as you send me the link through a private message. Thanks in advance for all the information you could provide.