WebOs out ...
It is not a big suprise. WebOS has a very small market share compared to its main rivals Android and iOS.
I was one of the many who got a touchpad at a discount and after you get over the beautiful UI, WebOS is somewhat sluggish (not terrible but slower than android for sure) and severely limited (lack fo apps). It goes to show that having a great OS doesn't mean much without many developers behind it.. and of course.. without a great deal of support. I don't feel HP handled the entire situation as well as they could have and ended up letting go of a OS that was a real threat to iOS, Android & Symbian.