Q: asp.net mvc 3 url end with a "." and throws a 404 I have a asp.net mvc 3 application and I want the users to be able to enter in tags of sorts.  However, when a tag ends with a "." (no quotes) it throws a 404 before hitting the controller's method.  
Any ideas...? Is this common or something jacked up with my configuration?

A: I think IIS is throwing the 404 before control gets to your application. I suspect it's matching the ExpressionlessURLHandler for the path *..
If you are brave, I suppose you could change the handler for that path to be asp, but I suspect there are some security implications to allowing that path through to asp.
Perhaps use a different character? 

A: This question was already asked and answered.  It is a silly MS thing.
Semantic urls with dots in .net
