It is a frustration in mid reply to find out you need to sign in again. On this site, I've noticed when I came back to a thread that my unfinished reply was still there waiting for the enter button. No other site does that.
I've also taken to doing a highlight and copy when I'm not sure. Then I can sign in and not repeat all the typing.
Being concise and un-wordy makes for a quick entry too. Some of these replies are like Tomes.
I don't read some because my attention span is more like that of a gnat. I can't handle it, man.