It's kind of like going to a strip club: I was never the guy who got on the stage or threw money at the girls so that the whole club could watch her pick it up (to me, that's kind of what My Free Cams is like).
But translating that to live cams is a little harder.
Another way filtering software works is to block sites based on key words, such as "sex." However, filtering software doesn't have to just block access to adult-oriented material.
You can configure the software to filter for topics such as tobacco, drugs and drug culture, alcohol, violence and racism.
Also, some ISPs (Internet Service Providers, the companies that let your modem connect to the Internet) provide content filtering as part of their basic service.
New websites pop up everyday, so it's important to keep your software up to date.
Also, learn how your Internet browser software works so that you can check the sites your family has visited (this is the "History" feature, which displays a list of websites visited by the web browser).
One thing to remember is that by installing filtering software on your computer, you might also restrict childrens' access to legitimate sites.
This is especially true if you rely on key words (such as "sex") for blocking.