I started Swap Mamas about a month ago -- it's a social networking community of parents who, rather than spend money on new kids clothes, toys, books, etc., are making friends and swapping what they already have.
Imagine -- you could actually give those too-small kids clothes or unused toys to another mama who needs 'em, save money, be kind to the environment, set a fantastic example for your kids, AND get something you need in return! My daughter gets such a kick out of helping me box up her old clothes to ship to other mamas -- she loves to GIVE.
There are tons of groups you can join on the site already and members are adding new ones every week. I really hope you decide to check it out -- it's a great group of parents -- I'm already seeing connections being made and fantastic swaps goin' down!