Well , I am\u00a0assuming\u00a0he might be a Stalker in real world only\u00a0that's\u00a0the reason he would have thought about such an Idea.If I don't know the Person and I don't want to Add the Person then Why would i Subscribe ? You ain't no Friend of mine but still i need to see what you do ? What sense does that make ?. People will give many logical reasons to this like .. there is a Famous Personality and they want to follow there public Updates and so they will use this new Facebook Subscribe Button .. well to cater for this Facebook already had Facebook Pages\u00a0 .. So again back to 0 ? Enough with Marks personal life guess work lets get down with this New Feature Facebook Subscribe \u00a0Facebook Explains about there new\u00a0Subscribe\u00a0feature on their\u00a0Blog. This has another feature as well, which lets you set various costum levels of news feeds to be brought on to your screen of your already old friends now that is an interesting addition. All these settings can be Managed from the Subscription Page. Facebook had the following in mind while launching this feature : \tChoose what you see from people in News Feed. \tHear from people, even if you're not friends. \tLet people hear from you, even if you're not friends. As I was talking about selecting the\u00a0custom\u00a0level of which updates you see of your friends, Facebook users will have the following options : \tAll updates:\u00a0Everything your friend posts \tMost updates:\u00a0The amount you'd normally see \tImportant updates only:\u00a0Just highlights, like a new job or move (i liked this one) You can also decide what types of updates you see. For example, you could see just photos from one friend, no stories about games from another, and nothing at all from someone else. Choosing what you see is optional. If you don't want to change what you see from someone, just ignore the button. If you see a Subscribe button on your favorite blogger's profile, this means you can subscribe. Just click the button to get their public updates right in your News Feed.Just like with friends, you can\u00a0choose how many and what types of updates you see after you've\u00a0subscribed.The Subscribe button also lets you hear from interesting people\u00a0you're not friends with\u2014like journalists, artists and political figures. How to Make others to Subscribe to you ? If you'd like to share your public updates with more than just friends, you can get a Subscribe button on your profile, too. People who subscribe to you will get\u00a0posts you set as "Public"\u00a0in their News Feeds. This is an entirely optional feature \u2013 you need to opt in.To let people subscribe, go to the\u00a0Subscriptions Page\u00a0and click Allow Subscribers.Once you allow subscribers, you can decide who can comment and what notifications you get. You'll also see a Subscribers tab on your profile, where you can see who subscribes to you.