http://www.jmarshall.com/tools/cgiproxy/
I thought I'd pass this on for anyone looking to use the PSP as a web browser. I wasn't sure if there were an address bar in the browser, since you're not meant to leave their page, but this script, along with being a web-based proxy, appends a URL form at the top of the page, along with a basic ad removal script. Just have the PSP goto the CGIproxy index, and you should be set.