Do you use metal or plastic tips?
I remember having a friend whose father had the metal tips, and the wall that held the dart board I think had more wholes in it then anything else. Then again, I remember a few kids walking away with small hole in them. Which is why I will not allow a metal tip one in my house.
I used to have a cheap electric dartboard, but never really had a place to set it up. I was thinking of one at our next house. I still have a really nice set of darts somewhere I think.