Analysis: Which URL Shortening Service Should You Use?

Danny Sullivan has a written a great writeup on comparing different URL shortners. The article is really interesting, you should read it here.

Danny presented this table in the article, which is the key document in this article. Check it out.

I also did a quick search of the popularity of each of the URL shortening service. Here are the results:

tinyurl.com	23,000,000
bit.ly	3,840,000
is.gd	3,160,000
tr.im	480,000
cli.gs	144,000
snurl	109,000
kl.am	8,810
short.ie	6,060