>> I tried:
>>    http://rubyurl.com/
>> and got
>>   <html><body><h1>Application error (Rails)</h1></body></html>
> 
> Hmm.  It's working for me...

It seems to work for all urls, except when trying to create a link to 
the rubyurl itself. Reading Robby's blog it looks like the URL filter 
has a problem.

martinus