I copy every post before sending (except when I forget, and inevitably it always errors out when that happens). If you have it copied and it errors out you can either just hit refresh or back and then paste it, depending on what error you get (since I get 2 different kinds that have to be treated differently). Either way, I've learned you have to copy them before sending so that you don't lose a huge post... especially the kind where you dug up numbers and did research just to create, losing those hurts the worst!