This will work on CL and this will work well on Youtube. First CL, go make a post about how you are running a contest and to e-mail you to be entered into the contest to win a new Iphone, or a new TV. Just get their attention and make it something people want. When the e-mails start coming in tell them that in order to enter into the contest they must first fill out, you guess it. A CPA offer. Some CPA offers are geared towards contests, now would be a good time to bust these babies out. This method will work awesomely on YouTube too. Create buzz, and with youtube you could actually give away something of no use to you anymore, anything. Maybe a book you no longer read, or maybe a nick nack, or just be black hat all the way and don?t give them shit, I?m not judging. Set Youtube?s description box to your site explaining to enter they have to complete the CPA, and depending on how heavy you wanted to use the contest method, you could make an entire site geared towards entering people into drawings and contest, set up a contest forum where people can get together and discuss what they?d like to see given away. If your not giving stuff away for real, then make fake users and enter them in, and have them be the winners so people think that it?s real.