I am not in any position to talk parenting with a Father such as Andy, but I can Offer My particular experience of having been a 10 year old with a filter on My internet. Like Many people on this site, I'd imagine that We could find a way around any block set before us at the age of ten. For me, though. Knowing the block was there was enough to keep me from doing just that (at home, anyhow). My parents put the block on, and told me exactly what they were protecting me from... and I wouldn't dare bypass it because of that. At school, however; I played enough "illegal" flash games for ten Slightly scrawny pale boys. I only did that because I knew that they weren't going to harm me or subject me to things I shouldn't be subjected to be at that age.
Saying that you shouldn't even try to implement a filter Isn't the best answer, I don't think. Just make sure that you aren't too strict, and The kids will be content with what they have. Especially at the age of ten and younger.
I couldn't stress
Parental Control Bar enough for an easy and effective way to test this.