Yes, length is considered (I think 24 characters is a number I've heard somewhere). Also, I've heard Al3x say that URL "format" is also considered. I'm not exactly sure what that entails, but I would guess that some query string characters would make it a candidate for shortening.
The best bet is to do the shortening yourself, or create some sort of "friendly" format to avoid shortening. It would be nice to have some official formatting rules exposed... I'm pretty sure it's not a trade secret :) -Chad On Tue, Jul 7, 2009 at 1:31 PM, Brian Smith<br...@briansmith.org> wrote: > > Infopete wrote: >> >> It looks like I get get this much in >> http://www.infonote.com/tw?1234567890123 >> before it gets converted to bit.ly > > Try removing the "?". Some people have already researched the circumstances > under which URLs get shortened vs. left alone. IIRC, one requirement is that > all characters after the ".com/" must be alphanumeric. Actually, I am not > sure that the length of the URL is even considered. > > - Brian > >