This is more of a power-user feature, but you can see a list of any unsubmitted post drafts saved in your browser at the bottom of the Guild:

[img]https://dl.dropboxusercontent.com/spa/quq37nq1583x0lf/b039_ym8.png[/img]

I had this turned on only for myself, but I realized it would be useful for everyone.

Sometimes I'll forget about a post I'd half-written, and this widget reminds me about it and lets me pick up where I left off.

You can click a draft to go to the thread it's saved for, and the reply box should populate with your progress.