Hate to let the cat out of the bag but several friends and family will be getting certificates from Groupon, LivingSocial, et al this Christmas. I have been on a real lucky streak in the last couple of weeks - since you can't predict what the deals are going to be, you can't really plan on purchasing them as gifts, but there have been a few that once I got the email I immediately knew who would love it. I am going to have to buy some cards or something to put them in as it's rather hard to wrap a sheet of paper. :) If you have not signed up with a daily deals site, you are missing out, kids! I'm writing an article on them and have found a ton that are awesome.
If you are not a member of these sites you are sorely missing out:
Groupon - almost everywhere!
LivingSocial - also almost everywhere!
Eversave - many cities available and also tons of online stuff, multiple deals per day
These are nice but don't usually have in-your-city stuff, mostly online deals:
Roozt - exclusively online, all eco-conscious stuff!
Jasmere - all online, lovely luxurious stuff that makes great presents!
Mamapedia - great stuff for kids, especially little kids, and great as gifts for moms
Plum District - lots of great online deals plus you get $5 for signing up!
BuyWithMe - in-city deals for an expanding list of cities plus some pretty good online deals.