A way to find dead links for external pages

[Foster Schucker]

I have a wiki that ties into external sites.  As these places switch to 
new platforms the old links die.  (Or they die due to refactoring).

Anyway I'm looking for a way to walk the wiki pages and see if there is 
a 200 response back from the other side.  I'm guessing one of you have 
had to do this before, no sense in reinventing the wheel.

In a perfect world it would spit out [PageName] URL ResponseCode for 
each URL (that would let me catch other errors like forbidden, etc.  but 
I'd be happy to get the ones that don't produce a 200.

Thanks!
Foster