just having ssh server and/or client, xmpp, terminal multiplexers, compilers, editors, interpreters, pdf viewer, media player, skype (no way! that's nonfree software.), and other goodies in extras/extras-devel is just great
plus, the N8x0 could be used as gorgeous fun and (fun)developing environments, and the upstreaming of drivers and kernel is great news

(if you really need twitter you could just install perl and use ttytter, http://www.floodgap.com/software/ttytter/)