I have created one application for my portfolio.
Let's say the URL is http://fb.domain.com/about/
and my FB app is http://apps.facebook.com/myap/about/
.
A user can access http://fb.domain.com/about/
directly from my site.
If the user types http://fb.domain.com/about/
or clicks http://fb.domain.com/about/
, how do I redirect them to http://apps.facebook.com/myapp/about/
Here's an example from http://www.oodle.com.
If you go to this link, you will be redirected to here.
How is that done? Let me know. I currently use php for my site.