Flickr.com Short URL Service
Believe it or not, flickr.com has a short URL service! The short URLs look like something like: www.flic.kr/p/7xxLMk. The last part of the URL is your flickr photos "Photo ID" encoded as base58.

This simple tool will make creating flickr short URL's a one step process. Simply copy the photo ID from your ordinary flickr URL and paste it in the box below. Then simply hit the "Get flic.kr URL" button.

You can viewa demonstration of the tool in action here: Demo Video (.MOV 4.7Mb)

Bookmarklet: You can grab a bookmarklet for short URLs here: Flic.kr bookmarket