Short Url
http://arm.in offers a free service to provide short URLs - an example can be seen in my previous post, where I use arm.in to link to the dealextreme earphones.
For example:
http://arm.in/bG4links to
http://www.dealextreme.com/details.dx/sku.24913%7Er.78306095 - so it's a lot shorter.
Great for tweets and short messages!