When I connected to Atze's server who had the Japanese techtree (which I did not have installed) and a map (which I did not have installed) configured, I correctly got a download prompt for the techtree. At the same time the
tomreyn: Player: tomreyn is missing the map: swamp_of_hope_a1messages started showing up. This repeated in what seemed to be a regular interval (5 or 10 seconds?) and every time this message was displayed an alarm sound was played back on my PC because the nickname "tomreyn" is contained in this message. This was rather annoying, but also a form of spam on the game console.
Edit (2012-05-11): Fixed some typos.
