I think scheduling is probably the worst - I have such a minor time being able to write for fun like this (in between work and novel and relationship and family), but, been trying out email stuff and it works, but it is slow-ish! but i have a few unfinished scenes with people that i'd like to punch back at now that i have some time
(i have these big grand work deadlines that appear and my head will be chopped off if i don't get them PLUS i am working on getting a second job, so, you know, this makes things even worse).
personally, i think these things are the hardest for me. i can understand people feeling like they don't wanna fuck things up too and partially i'm trying to figure out how i want to interact with the world as well. i'm not afraid of contacting people, but, i hate the idea of having 3+ scenes hanging in the wind, not being able to be finished and starting others, which may be why i am quiet when it comes to finding other people to add into that.
i like the idea of prompts as ideas, though. that can be pretty neat if it ends up striking you (not necessarily being told you *have* to do it, because then my brain freezes up!)