browse the Internet on their handheld's wifi connection. We STILL don't have this on the DS. I'm sure we'll all a little jealous - but we can take some comfort in the fact that this isn't a unique homebrew app running on the PSP - but rather an exploitation of an in-game artifact.
Wipeout Pure for PSP has a feature that lets you access updated content online (such as grabbing new textures or levels). This feature has been exploited to allow browing with some measure of control.
The scales are tipping.