Often occurs on video websites, such as YouTube.

A user begins by listening to a familiar song, and once the song is over they will sometimes click a Related Video on the side of the page. They can do this for the picture, or because the song is by the same artist, or whatever reason. Hence "sidebar".

Before long, and after several songs, the user will look back at their viewing history and notice they've gathered an odd, but awesome group of songs. Hence "journey."

When you see a "sidebar journey" comment, feel free to give them a thumbs up for stepping outside of their comfort zone.
Johnny: Had an awesome sidebar journey today, listened to some good s***.

Sam: Nice bro.
by Tarick August 27, 2013
Get the sidebar journey mug.