Healcomputer - E-commerce technology site + computer related articles + product reviews.
swap-bot - Swap-bot is a online service that organizes group swaps and a community of creative individuals.
Awesome Stuff To Buy - Huge list of awesome stuff to buy online, if you're looking for cool things to buy this is for you, including gadgets and unique products from sites like Amazon.
BookMooch - BookMooch is a community for exchanging used books.
Gadget G - In Gadget G you can find cool gadgets, geeky gadgets, home accessories, pet accessories, outdoor...
InterPals - InterPals is a friendly community of over 5 million friends, language learners, travelers and penpals.