By default, liking a page also makes that person a "follower," meaning your posts may appear in their news feed.
These papers investigate who the likers are. They attempt to predict demographics and personality traits based on what pages a user likes. facebook page liker
We’ve all seen the ads. They pop up in your feed right when you’re feeling desperate for traction: “Get 10,000 Facebook Page Likes Overnight!” or “Instant Liker – Boost Your Social Proof Now!” By default, liking a page also makes that
Software or websites (often called "auto-likers") that use automation or exchange networks to boost a page’s like count rapidly. How "Auto-Liker" Tools Work We’ve all seen the ads
Facebook runs constant sweeps to delete fake accounts. When those bots get deleted, they disappear from your page. Suddenly, you wake up with 500 likes instead of 10,000. You are back to square one, but you are also flagged as a potential spam risk.