Re: misingo (000 pokemon)
Missingno isn't a pokemon. It's a glitch in the first few games where Nintendo didn't code for what pokemon could appear. Blah blah blah, whole bunch of coding stuff I don't remember, and then you have Missingno. =P
Somewhere online there is this description of how it came to be and how it works. I don't have the time currently to look for it.
And I've never tried trading nor read anything on it. Missingno can screw up your game pretty bad. =\ Though, there is an interesting item cheat that goes with it. =P