Twadl is a Twitter tool that allows you to send photos with Twitter & count how many people click your links. It also has an interesting trends chart, as the one shown below.

Twadl can also create short URLs that you can track.
For example, http://twadl.com/1kE is a short URL for http://twitdom.com and you can track the number of clicks to this link at http://twadl.com/links/1kE
Pingback: uberVU - social comments