I just got around to trying this intriguing forum software, and am of course working on customizing its appearance. Would I be stepping on any toes if I moved the AboutVanilla style somewhere, and maybe changing the wording a bit?
I would assume it would be fine to get rid of it altogether, but if I had pretty much created vanilla from the ground up, I would be pretty offended if it was completely removed from someone's site. I would say leave it, but if you find it completely hideous, then AT LEAST leave the "powered by lussumo" like Hamed suggested. As for moving it, I'm sure that would be fine, but still leave it somewhere kind of obvious. (like at the bottom of the page).