Shortened links get the lg.cx domain. IMHO, goatse ruined the .cx ccTLD for business use. Besides that, I don't see the benefit of using this service instead of simply using any shortener of my choosing to link to a Google Map (but perhaps I'm not part of the target demographic?).
That's what I used to do but this is more convenient plus there's something nice about creating a content page with notes about linking into a maps application.
And yes, I'm bringing .cx back. Too soon? It was either that or Libya.
There are quite a few .to domains available still. For example, right.to is available and would work for this application (although it's not terribly short). They're $50/yr, but you have to buy 2 years up front. I used it for Yak because it makes sense to yak.to/stanford, yak.to/chicago, etc.