Many people use free services like www.tinyurl.com or www.bit.ly in order to compress long url's for use in forwarding, twitter, facebook and the like. Google will be putting their own version up soon. Here is the url
or in tiny url: http://tinyurl.com/googleshorten
or bit.ly http://bit.ly/googleshorten
It will be called : http://goo.gl/ and is only available right now for "google products".