According to Mashable, Bit.ly is the most-used URL shortener, having passed up the aging TinyURL in terms of traffic. But didn’t we already know that? They’re the default shortener for Twitter, they’re the least likely to close their doors (for reasons of funding and long-term plans), and people just seem to like them.
More interestingly, the Mashable posting covers the rankings and traffic stats for the other four top shorteners.
The top two are Bit.ly and TinyURL, with Ow.ly coming in third with roughly one sixth of Bit.ly’s traffic. Is.gd and Tr.im are a distant fourth and fifth, respectively, with less U.S. visitors between themselves than Ow.ly.