Cool program.

There are a couple small problems with it doing what is promised though. 

The links to the pages are postback's so a search engine is not going to spider them.
Please make the paging control use a simple GET anchor, otherwise only the 15 sites on the first page will recieve any benefit, yet DNN will still recieve the benefit from all sites submitted.

Also, In order to make it a proper link exchange so all can benefit, the link back should go to the Powered! Page on DotNetNuke.
Otherwise DotNetNuke recieves much more boost from the back link than any of the other sites do.  
There is currently no Google PR on the Powered! page to even pass on to the sites in the program.

WStemple wrote
I recently add a site to the link exchange (Powered by DotNetNuke) and am wondering why it does not show up in the list.  I followed the directions and clicked the link, but still not in the list.
Does anyone have information concerning this?

Did you click on the page buttons at the bottom of the links to look through all of the pages?  Mine showed up on page 3 as soon as I put it in, which I thought was wierd since it is supposed to be ranking the links by referrals back to DotNetNuke.com