Used to tinyurl.com, check out http://is.gd [4] and Compress That Address!
Links:
[1] http://linux.philosweb.com/drupal/category/it/blogging
[2] http://linux.philosweb.com/drupal/category/it/it-general
[3] http://linux.philosweb.com/drupal/category/it/reference
[4] http://is.gd