24 hours later...
Youtube works because pages are availale in html5 (or so I presume) because no other flash, that I can find, works at all, even with the gnash plugin installed.
Logging into disqus (to leave comments on various sites) is very hard, though slightly better with the icedtea plugin.
Firefox is not available in the repos (I thought it was opensource and even if it is only the actual FF icon that isn't, icedove/icecat are also not available). Not sure why this is. Anyone know more?
A bunch of browsers are available - Arora, Midori, Epiphany, Dooble and Abrowser. I'd heard of 2 of them before - Midori and Epiphany. Midori has a lovely UI but struggles with logins and doesn't seem able to use the gnash plugin as abrowser does.