I've been to a few servers where I seen guys "submerged in the floors like flounder" moving very quickly. Hard to kill and hard to see. Is this some kind of cheating? What are the possible ways to cheat? Are there names for the different kinds of cheating. Someone please give me the rundown. I also seen guys dancing around all spasmic. What's up?

It's called landsharking. the servers you were on obviousley havent fixed the glitches that allows this cheap tactict.