Poison isn't all that great of a type defensively, especially since it's weak to moves like Earthquake and Psychic, and it's only super effective against Grass. (Maybe Fairy-type, too?) That's pretty bad.
Official Mike Meekins of AA5 boards. Official Olimar of SSB Wii U Boards. Playing: Paper Mario
Cuz it is. Only one type weak to it, weak to 2 common types, The pokemon designs are meh as meh could be (Sorry nidoking and scolipede), no poison type legends, and the worst pokemon ever is of this type.
http://pokebot.everyboty.net/pix/217.jpg best picture to ever face the interwebs. The Official Shiny Zangoose of the X/y Board!