So, your kid has "irregular sleeping patterns" and you don't have a conversation with them to find out why? It might not even involve a computer. It might be too much time playing games. You might find out that you have a fantastically talented author that just can't go to sleep with ideas bouncing around in their head.
They start making money online and you don't ask how or why? Aren't you even a little bit curious? Do you have a kid who built the next Silk Road or do you have a budding entrepreneur? Yes, yes, I know those two might be considered the same thing...
Your kid is becoming more socially isolated and you don't stop by their room to check in on them and find out how life is going? Are they being bullied at school? Probably :( Are they just going through that tough transition from childhood to the teenage years when they realize their idealistic view of the world as a child is shattered? Maybe they just aren't eating well and you're seeing lethargy from early blood sugar issues. Maybe they've found it's more comfortable to talk to people through a computer rather than in person.
I didn't suggest you should ban your kids from computers. I suggested talking to them, taking an interest in their life and noticing what's happening around you. Taking an interest in your kids and helping to guide and educate them is part of your job as a parent. If you don't understand their interests, try.... harder... Maybe parents should try giving a damn.
And if you find out they are taking an interest in computers, may I reference TFA again........
Ways to use cyber skills positively
Yep, there's a section in that article about where you might channel interests your kids have in technology. TFA and the /. summary are two entirely different movies.