Did you update to 2.2.4 software?
That could be your first test.
Datajog may still be looking for testers. Also there is pdf markup app, look around for the thread.
I assume you have beta feeds enabled in Preware. If not, read up on webos internals of how to turn them on.
If you have 50+ paid apps (plus preware homebrew paid app), you can petition Rod Whitby of webos internals to test App Tuckerbox. That will open up installing paid apps across your devices and give you access to a feed of all apps in one place (as I am assuming you will want to buy a HP TouchPad, once you've seen the beauty of webOS).