[quote=Rtron]
People who go, 'Oh, I'll post in this collab/RP tomorrow!' and then proceed to post in literally everything BUT what they said they would all throughout the following week(s).
[/quote]

THIS.

THIS SO MUCH.

I've had to put up with people forgetting about things (or possibly plain avoiding) for months while they casually attend to other tasks. I even reminded them several times and they still managed to completely fail to do it >.>