One thing I'd like is instant messaging. The "Chat Activity" works to other XOs but evidently not to anyone else. Pidgin and Finch have been ported, so I tried Finch, being text-based and therefore presumably simpler. It works, but unfortunately it is based on ncurses. Evidently, few if any of the curses controls work on th XO, so I can't even expand the "window" to full screen. It would be nice if there were a plain text (no pseudo-windowing, no curses, etc.) IM client, perhaps one based on libpurple?
Update: I found NAIM which is full screen and does not try to emulate windowing, but has an odd choice of colors - the typein area is white letters on a white background, which makes it hard to see.