Thanks to twitter and its 140 character limit, we now suddenly have to care about web addresses (URLs) length. Yeah, whatever. Except that you never really know where that shortened URL will take you and it could easily be just bait to increase someone’s page hits count.
Fear no more thanks to Long URL Mobile Expander, a Firefox extension created by Sean Murphy, that reveals the true destination of obfuscated URLs using the LongURL web service that covers more than 200 URL shortening services.
You can get Long URL Mobile expander from Mozilla Add-ons.