When I first read the title, I thought you were asking the theoretical limit of how many times all users can post on D.Buzz (before some great power prevents them from doing so). 😆
5-minute posting limit? Create a theoretically unlimited number of accounts. 🤔🙂
To answer your question, just imagine trying to create a 280-character password that allows characters from other languages, emojis, and less-used special characters. 🤔