[danskmacabre]

We have a few PCs in the house, 2 tablets, 2 ereaders, an ipod, various mobile phones and consoles of various types.

We have 2 kids one 9 and one 12.
All devices with connectivity to the internet are monitored and the portable devices that the kids have access to are mac address banned from the internet.

Consoles are all in the loungeroom where we can see them and no PCs, TVs etc in their rooms.
We only allow internet access in the loungeroom when we are present.

Apart from that we allow 1 hour access to each child per day to any electronic device, which includes, TV, consoles, PC, ipod, tablets etc.
I allow my kids to read ebooks on their eareaders unrestricted tho as that's the same as reading a physical book (we strongly encourage reading), but again the ereaders are mac address banned from internet access.

On weekends and holidays the access to electronic media is increased to 1.5 hours a day.