Dien and Anya,
When my kids (age 7 and 3) go online, I am right there with them looking over their shoulder. They like to go online and play games at www.bigidea.com and www.larry-boy.com (VeggieTales games) or sometimes www.pbskids.org, the Public TV kids website.
I used to be afraid of what they might happen on to by accident, but yesterday I installed a filter that should block most of the garbage. (Of course, nothing is 100% foolproof.) The filter I installed is a very conservative filter; it may be too restrictive for some. If interested, go to www.afafilter.com --no affiliation here, nor compensation for mentioning it.
My 7 yr old son can't wait until he gets his own computer...
JDB
Filter the filth with this...