how do we get to know about so many PTC sites?

@padu19 (1441)
India
May 11, 2007 11:20am CST
where do you think do you get to know to know about the PTC sites. how do we join and start referring others? what is your opinion about this? well, i think one PTC site helps the other by it's advertising strategy which is implemented by our clicks and reading mails,
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