...or I've found a usability kink. Specifically: in my first post I've added 'gundam' as a topic, only to realise later that those topics are case sensitive. Okay, let's add 'Gundam' topic. Nope, it looks like it thinks it's already there. Okay, let's remove 'gundam' topic, then add 'Gundam'. Nope, still lowercase. Okay, remove 'gundam', save, edit, add 'Gundam'. Lowercase still.
Bug or feature? And if it's the latter, can someone with superpowers edit that topic to start with a capital letter? :D