Toribash
Or if you dont have money for a broadcast (they cost 10k) try changing the name desc to something catchy, and make the color red so that the name would be on top of the multiplayer server list. Do so like this :

/desc ^02Duels_here500TC

Or something like that.
<&Erth> fagm <&Erth> duck <&Erth> *fuck
Fagm duck fuck everyone.

Broadcast is too expensive, but server name doesn't help. Maybe I should change my name so I have less haters.