I'm surprised that you are so surprised, and that you discover these answers now. You barge in here, flaming away at Nokia because you've flashed first (an image that's not officially available fir the N800) and then find out some apps are missing. Have you been living under a rock or something ? This has been public knowledge for ages.

This time around Nokia and the maemo team have been *very* forthcoming and transparent about this issue, warning a long time in advance that Chinook would break API compatibility, explaining their motives and why it would be a good thing in the long run (which I believe is true). They also released the SDK in advance and reconfigured maemo.org so that third-party developers could port their apps in advance.

It was much worse when the 770 went from OS2005 to OS2006, with a *binary* compatibility break : *nothing* worked anymore. The community did catch up nicely though, and it'll be much easier this time around.