I just scored me a nice deal for a weekend ocean getaway and technically on valentines weekend no less(Sun-Tues). When you find a place you like or would go again if you get a deal, its worth signing up. I saw this buy 1 night , get 1 free come across my inbox and jumped on it. We got a 2 bedroom 2 bathroom suite for $159 with a river view and that's for two nights. That includes free breakfast each day and a managers reception at night.
It worked out well as the little one is on winter break that week so a Sunday through Tuesday avoids any school days missed. So every once in a while it does pay off. I will continue to sign up and then I delete later if it really is something I wont use, but when those deals or presale codes come it can score you a deal when you least expect it.