You don't like the fact that URLs on Twitter aren't clear about where they lead yet you type extremely ugly obfuscated code into this script? The addon also hasn't been updated since the discovery of its absurd memory leak.
I think your claims of blazingly fast speed are untrue and I get better results with LongURL. Besides, anyone serious about this issue recognizes linkrot as a major problem. As of a couple days ago, you have let the long-shore.com domain (and with it any hope of using this script) expire without the transparency of telling anyone.
I think this is a very useful script, I've already tried few other scripts but none of them works this good.
In opera it works like a charm, very good!
If you need a script to preview short URLs I suggest you to use this one, not only provides the masquerade url but also has features to provide you a detailed analysis of possible redirect chains and shows you title, dimension and content type! As well as you can flag a suspected malicious url!
Very nice graphics and really nice script, kudos to the authors!