i'm trying to build a weblog app similar to xanga, and was wondering
how does the site handle a url like http://www.xanga.com/jediwa72 ,
where the username "jediwa72" is not a file name nor is it passed in
as a URL parameter (?UserId=jediwa72). On top of that, how does the
site decide to show either the "main" or jediwa72's page based on
that? You would think they would have to use the hide property, which
would be totally inefficient, or redirect to another page, which they
are not. any insight?