There are simple mechanisms to prevent "penis flood" without censorship: categorization (18+/SFW categories), and sybil attack prevention/popularity ratings (ju

There are simple mechanisms to prevent "penis flood" without censorship: categorization (18+/SFW categories), and sybil attack prevention/popularity ratings (just because 1 guy wants to upload his penis 1000 times, doesn't mean it must appear 1000 times in the global feed. Trolls can attract a lot of attention, but most people aren't trolls).