First thing I noticed was a UI bug. I thought I was forced to enter something in the "contain/start with/end with" box. I almost left the site before I realized that it was optional.

Second, it is very slow. It makes no sense to me that the processing is done with AJAX. I'm already clicking a button to submit info. Would it really hurt to generate everything on the backend (which would presumably be much faster) and reload the whole page?