Gaming slang for a sniper. Someone that uses a snippers rifle but does not camp.
"Far out that dudes a real snippa got me on the run with that rifle."
The person who calls himself "Snippa" is one very talented gamer, somewhat talented web designer, and not so talented programmer all around.
The person who calls himself "Snippa" may often be found stabbing people on irc.dosfx.com in the channel #idlewhores
Snippa is a very odd creature, take caution when approaching.