Block Adult sites without using any software
There are many tools to block accessing pron contents with your pc, but those software can be easily bypassed by uninstalling it or changing the setting , if your kid is smart....
Here a little trick/service used to block pron/ adult content and also the same site offers a security protection with adult blocker. Let me show how to configure in to your win 7 or win 8 pc... [If your using windows XP then its time to make a move, because microsoft officially announces its retairment with xp on 8th april, that means xp alive with a official support this will make risky pc life]
