On: Tr.im is now in the process of discontinuing service

[nir]

[Hi, Billy Mays here for..] TheRealUrl does it too, with JSON/P support and returning page titles as well! ;)

http://therealurl.appspot.com/

(it runs on Google App Engine, so I expect to keep it up as long as GAE exists. I didn't get TLD for it, to keep maintainance/costs at zero. And it memcaches everything, so feel free to query it as much as you like)

[tlrobinson → nir]

http://permanize.org/ too.

[nir → tlrobinson]

Nice one :) I was thinking of adding a downloadable list too - how did you get so many archived URLs? Do you have a cron running on Twitter/etc?