I've seen a few posts about this phenomenon, so I'm submitting a little trick.
So you're about to put your finishing touches on your well thought-out but very disconnected sixteen-page rambling on your thesis that Michael Jackson is classified as an ESTj under the Socionics system. Great!
One small problem--what if the Internet never gets to see your marvelous work? What if you click "Post".. and it never actually posts? After all, there are sometimes instantaneous glitches that prevent a post from going through. These things are nobody's fault (except @Jennifer's).
Fear not! Just before you hit "Post," hold Ctrl, then press A, then C (Ctrl+A, Ctrl+C). Congratulations; you've selected your whole terrible essay and copied it to your clipboard. Now, if a fuckup occurs, you can just paste the thing into a new post with a Ctrl+V, and you're good to go.
Even better--if you make CTRL+A, CTRL+C a mental habit, like I do, it happens pretty much by itself! How amazing is that!?
Now, the world will never be deprived of your intellectual contributions.