When I first joined here I wanted to have a unique username without any numbers. I chose "Volan" at first, which was a random name I came up with (though I can't remember how). Then when I joined PSN I tried to have the same thing to have a single 'gamer identity', but "Volan" was taken. I managed to choose "Voulan", and liked it better. I then changed my username here to add the 'u' so they match. My Steam is also the same.
It's pronounced Vou (rhymes with bow) lan (like land without the 'd'). A lot of American gamers pronounce it Voo (rhymes with you) laan (rhymes with darn).
I really like it - it looks miles better floating above my head in games than x_XEliteSniper_1285X_x23 does, at any rate. I also had a bit of a scare when playing Skyrim - Paarthurnax tends to use random dragon words when talking to you, and at one point he said a word that sounded exactly like "Voulan". It was a real break-the-fourth-wall moment, since it seemed he was talking to me directly. Apparently he said "volaan" which means 'quickly', and he uses it saying "Why do you come here, volaan?" which was what made me jump, since it sounded like he was calling me by name. Draugr occasionally shout it out as well, saying "Dir volaan!" which means 'die quickly', or even 'Die, Voulan!". So we can pretend that's what my name means.
Some cool trivia, if anyone cares to read it.