After watching the video and reading the FAQ, I still don't really understand how it works. Is there some bar always hanging out at the bottom of my app that a user taps on to bring up the app discovery grid?

If so, I'm personally not interested. No offense, it just feels as painful of a user experience as iAd.

I'd much rather programmatically call up the app discovery grid based on some action a user in my app takes.

That all said, my comment may be moot, but I wouldn't be able to tell because I haven't been able to figure out how Xplode works from the Xplode site.