Is there a Twitter app that extracts urls from Tweets that contain a certain hash tag?

A nice idea. My only concern would be the use of hash tagged trending topics to spread spammy links. Maybe including an option to expand the links to help users weed out the irrelevant links.

The other downside I can see is that the content of the message gives context to the link, so providing links alone would lose this; but I’m sure there are ways of getting around this with an intelligent design.

Taken from the TwitEye idea stream.