My main account is a 50 4Star General. Its not a booster in the sense of negative exp but since there are so little games on it and so many wins it makes the other person fly levels.
Selling My Main zKenshi for $475
50 in MLG 2,400 MLG experience (5 Star General)
50 in Doubles 100 xp
50 in TS 100xp
50 in LW 100xp
48 in FFA 110xp (retired Playlist)
47 in Swat (although soon 50)
3,000 experience total. Less than 100 socials.
Has a Pretty good list with pros like Cloud, Walshy, TalenT, Lunchbox, GunShot, Brake,ElamiteWarrior etc. A few good Semi's as well.
Live until September 2010
If you can play really well at the high levels than this will boost you fine. I have a specific price but I'm up for negotiating offers.