All the rest are neutral technical names. And mp3 sounds kind of nice to my ear; easy to remember and rolls off the tongue.<p>Ogg, on the other hand, is an actively stupid-sounding word, reminiscent of a particularly moronic caveman's grunt. Theora sounds OK but is ruined by the first part, and Vorbis is again a silly-sounding word.<p>All told the names remind me of the worst sort of childish open source whimsicality. They paint the picture of a bunch of nerds so intent on demonstrating their lack of care about marketability that they deliberately name their project the stupidest thing they can think of. Well it worked - they certainly affected the marketability, and here we are, with the developer who stands up in a meeting and says "so, what about Ogg Vorbis support?" looks and sounds like an idiot. Well done.<p>I don't even like having an .ogg file on my computer, the name annoys me so much. You might say names are irrelevant and maybe they are to you, but they're not to me.