Technically not a freebie, but wanted to remind everyone about places to check out deals when planning trips! summarizes all the daily group buy deals in one place. Let you pay about half price for restaurants, spas, activities etc. Changes every day so keep checking.

Entertainment book and their website has coupons for 2-for-1 and deals for hotels if you say entertainment rate on the phone with the hotel and have the card.

travelzoo is a great website too for deals.