Mozilla released a\u00a0Firefox tool called Facebook Container\u00a0to stop the social network from seeing what you do online beyond Facebook\u2019s own site.\r\nI was just asking a colleague if this sort of app or extension existed earlier today and sure enough, it does. To add it, open up your\u00a0Firefox\u00a0browser, click\u00a0the link\u00a0to the above tool, and tap + Add to Firefox.\r\nThe extension logs you out of Facebook, deletes Facebook cookies, and \u201cwalls off,\u201d your activity from everything else you do online. (Cookies are those text files that websites use to keep tabs on you.) You\u2019ll notice the word \u201cFacebook\u201d appears in blue in the address bar after you add the extension.\r\nFrom Facebook Container:\r\nWhat does it do?\r\nFacebook Container works by isolating your Facebook identity into a separate container that makes it harder for Facebook to track your visits to other websites with third-party cookies.\r\nHow does it work?\r\nInstalling this extension deletes your Facebook cookies and logs you out of Facebook. The next time you navigate to Facebook it will load in a new blue colored browser tab (the \u201cContainer\u201d).\r\n\r\nYou can log in and use Facebook normally when in the Facebook Container. If you click on a non-Facebook link or navigate to a non-Facebook website in the URL bar, these pages will load outside of the container. Clicking Facebook Share buttons on other browser tabs will load them within the Facebook Container.\r\nYou should know that using these buttons passes information to Facebook about the website that you shared from.\r\nWithout the extension, Facebook, like Google and other companies, can track you when you visit many websites, such as those that have a Facebook like button. It means Facebook gets more than just personal data it can use to target ads based on your profile.\r\n\r\n\u00a0\r\nIt\u2019s a new step in browsers becoming more assertive on behalf of everyone who uses them to protect privacy a little better. Here are some others.\r\n\u201cFacebook Container isolates your Facebook identity from the rest of your web activity. When you install it, you will continue to be able to use Facebook normally. Facebook can continue to deliver their service to you and send you advertising,\u201d Mozilla\u00a0wrote on its\u00a0blog. \u201cThe difference is that it will be much harder for Facebook to use your activity collected off Facebook to send you ads and other targeted messages.\u201d\r\nWhen you first run the extension, it\u2019ll log you out of Facebook, delete any Facebook cookies, the text files browsers save and that websites use to keep tabs on you.\r\n\u00a0\r\nThe next time you load Facebook, Firefox will house it in a separate container labeled with the word \u201cFacebook\u201d in blue in the address bar.\r\nFor details on how the extension works, including a warning that Facebook Container can mess up websites where you use Facebook credentials to log in, check\u00a0Mozilla\u2019s introduction to Facebook Container.\r\nFacebook facial recognition\u00a0\r\nOkay, as we\u2019ve established by now, Facebook knows a whole lot about you. Chances are you\u2019ve given it your name, your hometown, the name of your employer, and a number of other important tidbits about your identity. (See how to find out exactly what \u2013\u00a0here.)\r\nIt also knows what you look like. Thanks to the magic of computer algorithms, Facebook takes photos you\u2019ve uploaded and comes up with a formula that lets it identify your face out of everyone else on the social network.\r\n\r\nFacebook CEO Mark Zuckerberg will testify before Congress in wake of controversy over the leak of users' data. Playboy has deactivated its Facebook accounts amid the backlash.\u00a0(Photo: MLADEN ANTONOV, Mladen Antonov, AFP\/Getty Images)\r\n\r\n\r\n\u00a0\r\nFacebook does this in the name of convenience \u2014 so it can tag you in photos other people upload, or notify you if someone tries to use your profile pic as their own.\r\nI personally like this feature, and liking having the option of allowing myself to be tagged in photos or not. (I hate when people tag me in photos to advertise something and think that having my name in the tags will get them extra attention. HATE IT.) The other big reasons Facebook does it are:\r\n\u2014 For suggesting tags in photos uploaded by your friends and family.\r\n\u2014 To let you know when you\u2019re in a photo \u2014 even when you haven\u2019t been tagged.\r\n\u2014 To alert you if someone uses a picture of you as their profile photo.\u00a0(This also has happened to me \u2013 impersonation and spam accounts).\r\n\u2014 To help people with visual impairments know who\u2019s in a photo.\r\nBut\u00a0\u2014 if you think it\u2019s creepy that Facebook has this kind of facial recognition, and consumer groups\u00a0told\u00a0the Federal Trade Commission just that in\u00a0complaint Friday \u2014 there\u2019s a fairly easy way to stop the app from constantly scanning for your face:\r\nFrom your Facebook page on the web or inside your Facebook app, open your Settings menu.\r\nClick the \u201cFace Recognition\u201d tab.\r\nClick the \u201cEdit\u201d button next to the Face Recognition option.\r\nChange the setting from \u201cYes\u201d to \u201cNo.\u201d\r\nClick \u201cClose.\u201d\r\nYou\u2019re done!\r\nAccording to Facebook, turning this feature off automatically deletes whatever data Facebook has about your face and prevents it from further scouring your photos to figure out what you look like.\r\nThat might give you some peace of mind, but remember that after you change this setting you\u2019ll no longer get alerts if someone posts a photo of you, without tagging you first. It\u2019s an all or nothing deal right now.\r\nHopefully, Facebook will change that, in the midst of all the other privacy concerns they\u2019re working on.