Athersgeo
Rookie
IMDb, along with Wikipedia, can be very unreliable.
IMDb, along with Wikipedia, can be edited by ANYONE with an account.
Hell, I have one.
With imdb though, you have to submit the edit and they have to approve it before adding it. At least that's the way it was when I tried to edit something for an actor's credit that they had incorrect.
True enough, they do. That said, though, I've seen some very...erroneous data get onto IMDB - most notably when at least two of my friends were credited with being the stars of the next incarnation of a certain brightly coloured children's TV show...