We continue to operate two web servers which have WordNet::Similarity and WordNet::SenseRelate::AllWords available. These can be found at 

http://maraca.d.umn.edu
http://marimba.d.umn.edu

From time to time the software will get a bit tied up and need to be restarted.
We don't monitor these sites all the time, so if you notice this please let us 
know. It's a simple matter to restart, and we'd like to keep making these available
as long as they are useful.

Enjoy,
Ted

--
Ted Pedersen
http://www.d.umn.edu/~tpederse