Good list. I use a lot of these already but some are new to me.
One security tool I really like is Web of Trust. http://www.mywot.com It's a little like SiteAdvisor in that it provides warnings for risky sites, but it has the added benefit of allowing people to rate sites and explain why they have rated in a particular way. If they had problems with an online shop or if a site has bad language and isn't good for kids, the rating and comments reflects that.
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