I use LessWrong as a place not just to post rambly thoughts and finished essays, but something in between.
The in between parts are draft essays that I want feedback on, and want to get out while the ideas are still hot. Partly it's so that I can have a record of my thoughts that I can build off of and update in the future. Partly it's that the act of getting my words together in a way I can communicate to others is an important part of shaping my own views.
I wish there was a way to tag frontpage posts with something like "Draft - seeking feedback" vs. "Final draft" or something like that. The editor is so much better for frontpage that I often find it a hassle to put a draft product in shortform. Plus it feels a bit of a "throwaway" space, which is what it's intended for, but to post there feels like it doesn't do justice to a certain amount of work I've put into something.