Well I really couldn't recall any differences. I mean it was shorter so I guess a lot was cut out/compressed to fit into the time given...but I bet some things were different. I just don't really remember much of the movie version.Really no differences? Did they delve into the lives of his fellow board posters? Were his two best friends there? (btw, I don't know why, but I found the turtle gag in the drama amusing). Were Hermes' two best friends and her little brother there? I know they were missing in the manga.
And yes the turtle gag was amusing...but I really just had to smack my forehead and shake my head at the thought of anyone doing that Lol.