Interface, maybe, but the secret sauce (if it can even be called that) for TikTok is the content discovery (recommendation) system. (Vine used a traditional fri

Interface, maybe, but the secret sauce (if it can even be called that) for TikTok is the content discovery (recommendation) system. (Vine used a traditional friend-follower SNS design, and anecdotally all of my interactions were from off-platform links so...) Also I feel like the problem with Facebook is not that it's copying, but rather their copies often seem subpar. Remember the function to send/receive money in Messenger? Back in the day it seemed like one of the worse instantiations of this feature out of the various messenger systems...