Found this website after googling "facebook vote exchange". Looks like a great website, and would definitely help with my contest a week from now! 
Contest Galaxy
Your Contest and sweepstake headquarters.
Welcome to the Official Vote Exchange. Our address is www.contestgalaxy.com Please read our rules before posting.
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2 Re: Hello! on Sat Apr 21, 2012 4:12 am
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cool welcome! get to know our site so once your ready to request votes it will be easy to use
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How to NOT have your topic locked:
- post the ending date of the contest in your topic title
- return the votes you have been offered
- come back on the forum every day and don't be away more than 2 days.
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