Healcomputer - E-commerce technology site + computer related articles + product reviews.

Postcrossing - A postcard exchange project that invites everyone to send and receive postcards from random places in the world. For free!

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.

swap-bot - Swap-bot is a online service that organizes group swaps and a community of creative individuals.

Gadget G - In Gadget G you can find cool gadgets, geeky gadgets, home accessories, pet accessories, outdoor...

BookCrossing.com - It's the World's Library. It's a smart social networking site.