Definitions by Crowsie

Followlocked 

The hesitation one feels when they consider unfollowing a mutual follower on social media.

Jane's so nice, but her Twitter timeline is boring. I want to unfollow but I feel so followlocked.

Followlocked by Crowsie May 30, 2019

username basis 

When you don't know someone well enough to know their given name or a personal nickname so you refer to them by their online handle.

He and I are getting along pretty well but we're still on username basis.

username basis by Crowsie October 26, 2013