Thanks to StumbleUpon, I found a great site that you may find useful: http://thefreesite.com/
They list free offers on a variety of things. Each category is separated on the homepage (categories include free mobile phone stuff, free Internet access, free samples, free software, "family freebies" (i.e. household/family stuff), free graphics, prizes and contests, miscellaneous freebies, and more), so you can find free stuff for whatever specific category you're looking for.
For some more ideas to save money, check out my lists at http://froogalstoodent.blogspot.com/2014/05/a-few-simple-ideas-to-save.html or http://froogalstoodent.blogspot.com/2014/05/secrets-to-financial-success.html.
I really like the idea of organizing these links into categories; it's useful for people who have a specific need and want to find free resources quickly.
And who doesn't like free stuff?!