There are a whole host of algorithms. Recomendation, feed, suggested followers, interest-based suggestions, etc. I am suspecting algorithms for how "trending" t

There are a whole host of algorithms. Recomendation, feed, suggested followers, interest-based suggestions, etc. I am suspecting algorithms for how "trending" topics are picked are quite involved. It probably goes through filters, blacklists, whitelists, some AI-voodoo and gets increasingly promoted based on engagement in real-time. That secret sauce is ripe for manipulation and extremely powerful. Against combating spam - I mean, isn't this how something gets stronger? HN has a strong view that open source software is more secure because it gets hardened through exposure, not through obfuscation.