Followage allows you to view how someone has followed a given Twitch channel.
This variable has two optional parameters where you can enter the "followee" and the channel to see how long said followee has been following for, for example
$(followage fossabot wipz). Otherwise it defaults to either the username and the current channel or the first and second arguments.
fossabot has been following wipz for: 1305d, 22h, 29m and 45s.