"Spamming" happens when you kill a person with something they should have known was coming because you have been doing the same thing for the last 37 minutes, yet for some reason they got caught off guard and/or there was simply no way, and I mean no way, they could have prevented your attacks. Those other players that do counter your attacks are aim bot users and hackers, the guy who cries spammer is the only clean player in the game.
Just do what I do. Open up the console and type:
\bind x say stfu you damn baby
It works great for me.