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In playing with twitter I knew people were working around the default 140 character text limit for twitter. I saw many people using tinyurl version of their blog links and wanted to find out how to do it. Some quick investigation led me to the TinyURL firefox plug-in, where from the Tools menu, you can create a TinyURL from any copied link, or from the link of your current page.
This plugin works great and saves you from having to visit the Tinyurl.com website whenever you want to make a TinyURL.
Here is the link to the TinyURL Firefox Plugin
-Dragon Blogger