Check out urlte.am, it is a bit similar to what you have described. (Disclaimer: I am a member of that team). The history option sounds very interesting. For e

Check out urlte.am, it is a bit similar to what you have described. (Disclaimer: I am a member of that team). The history option sounds very interesting. For example, the owners of "ethical" URL shortener is.gd do just change shorturls if they like a particual shorturl (e.g is.gd/td leads to tweetdownload.net, a site owned by the same company as is.gd. I know for a fact it previously led to a different URL.)