And in a lesson of how *not* to write a CGI try hitting the page without an id (or probably shouldn't): http://dynamodata.fdncenter.org/990s/990search/ffindershow.cgi. It prints itself in what I'm guessing is an endless loop. I got a couple hundred before I realized what was going on and closed the tab.

If you know the owners of that site or are feeling charitable you might let them know. It's a pretty bad bug. Self-inflicted DoS.