By nature, people love to build communities. Twitter is no exception. So when likeminded people gather on Twitter to discuss things they care about, it’s not unusual for them to say “hey, we should explore this more indepth and maybe even regularly.” So what is a Twitter Chat? Generally, it’s a gathering on Twitter at a particular day and time (often recurring weekly) to talk about a particular subject of common interest. That, in a nutshell, is what Twitter chats are: groups of people gathering at the same time and day each week to talk about something that matters to them collectively. Their conversations are no more private than any ordinary time on Twitter but the hashtag (#) is a way of distinguishing all tweets around a particular chat and making the content of that chat searchable after the fact.