Did you know that hundreds of advertising, marketing, and other companies may be tracking your every online move? These can be beneficial when advertisers show you ads customized specifically to you, but it can be creepy, too.

While researching information for an online privacy web course and quick guide for Family Tree Magazine, I came across several resources that can help show you who’s tracking you, as well as tools to block organizations from tracking your online movements. I was surprised to find that 114 companies were tracking my online surfing, and began using one of the tools I learned about to block some of the trackers.

Check out my “Web Browser Plug-ins for Privacy” quick guide in Family Tree Magazine‘s January/February 2014 issue for information on several tools to help you retain some of your online surfing privacy.