These two services (TinyURL and shortURL) are great for taking long URLs and processing them so that you can use a different shorter URL to link to the original one. This is useful for stuff from IM, to Email and Twitter (got keep it under 140 characters!). In Safari there’s the script that uses the shortURL in an AppleScript that you can put in to Quicksilver trigger. For Firefox there’s the TinyURL extension, which adds an icon to your location bar that you click and can either make a smaller URL from a URL that you’re thinking of or the current page.
In the end you can take a URL like this: http://www.mactips.org/archives/2008/02/08/built-in-tinyurlshorturl-to-your-browser-safari-and-firefoxflock-respectively-to-shorten-long-urls/ and change it into this: http://tinyurl.com/yoexaq.


Miki
The TinyURL website has one to grab here Add TinyURL to your browser's toolbar.
I prefer to use a modified version of the bookmarklet which opens the tinyURL site with the generated URL in a new window instead.
I hope the pasted code will display in this comment, here it should follow:
javascript:void(window.open('http://tinyurl.com/create.php?url='+document.location.href));February 8th, 2008 at 4:51 pmTravis Jeffery