Need a good tag cloud generator for my site

I have been using google to try and find a good cloud generator. There are many sites out there that will allow you to paste in a URL, then it will generate a cloud with code you can embed on your site.

However, I need a generator that constantly updates based on the most frequently used search terms. Has anyone come across one that will do this?


I think you may have to run that locally on your own server, where you keep track of your own search terms and create a tag cloud from the results.