Rochelle's vacation rental site seems like a great site also. Good Luck
Trulia is a great site for buying and selling, but because the traffic is directed toward those transactions, a vacation rental would not find many "takers" here. The best bet to advertising a vacation rental is on Craig's List at http://www.craigslist.com. Your rental posting is free and you only need to update it once every week to keep it fresh and at the top of the list.
Grace Morioka, SRES, e-Pro
Area Pro Realty