Title says it all. Can we ban the well-known URL shortners from links in the site. I'd prefer in general text too, but that might to too far in some cases.

Say these 14 (as stolen from a blog):

• bit.ly
• BudURL
• Eweri
• HEX!O
• idek.net
• is.gd
• kl.am
• Lincr
• POPrl.com
• RubyURL
• Snipurl
• TinyURL
• twurl
• urlBorg

They only obfuscate links; making broken links particularly hard to correct. Considering the type of users who typically use them I cringe every time I have to click one (though it's been a while since I got a virus warning).