My son is on the Internet every day after school and often through the evening. Although I drop in his room to see what he's looking at and who he's communicating with, I can't be there all the time. What do you suggest?
Some families keep the computer in a common area of the house (kitchen, den, etc.) so that kids are not assured of being alone when on the Internet. An option I recommend if your son has a computer in his room is to have a second screen that displays exactly what appears on your son's computer. This is an easy thing to wire, and can cost as little as a couple hundred dollars -- or nothing, if you use the monitor from an old computer.
I don't see you as Big Brother, simply because your son would know that anyone in the house might see what he is doing at any time. Just as you wouldn't let someone else stock your kids' library, you don't want to allow unmonitored access to the Internet.