Online, short alert sounds like this became common as livestreaming and social video made audience growth a visible part of the content itself. Creators use a distinct follower cue so viewers can hear a follow happen even if they miss the on-screen pop-up. The follower sounder fits that role because it is brief, positive and easy to recognise after a few uses, which helps build a familiar ritual around follows. It is now reused beyond live alerts in edited highlights, montages and short social clips marking new followers.