The idea of Throwback Thursday (TBT) has been gaining popularity in the social media world for the several years. No one knows precisely when or how it started, but if you spend any time on Facebook, Instagram, or Twitter, you are probably aware of it. On Thursdays, people post old pictures of themselves. People like to remember “the good old days” and Throwback Thursday is one way to do it. Throwback Thursday posts are often promoted with the hashtags #TBT and #ThrowbackThursday.