Ha, good question! When I started this project I thought about some maze - building might be a core aspect of the game. So I came up with this thing 'maze expert' and Bert being just a funny name. So I registered the domain mazebert.com and grew to like and keep it ;-)
Haha, I like that you switched from Maze Expert to Mazebert, that gives the title and the game itself a very unique character :D