There shouldn't be a question about supporting portrait mode in addition to landscape mode. Community members created a portrait mode for the N8X0 tablets with a hacked kernel. As far as applications goes, that's on the individual developers. Including a rough portrait mode in the kernel officially (it could be hidden, but for the sake of stability) is a "duh" move. As with an accelerometer on board this is no excuse. Take the initiative team Nokia. It doesn't need to be pretty, it just needs to work.