Spend a few minutes browsing on the Internet, and you will likely be inundated with requests to sign up for services or to install software and toolbars in your browser to “enhance” your surfing.

One set of browser add-ons in OS X are based on the Community Toolbar, and may be difficult to remove if the distributor does not include an uninstaller. Here is how to uninstall them. Topher Kessler ...