Coté says something I've been thinking for a long time.
There is nothing more frustrating than accidentally marking a whole batch of emails or unread articles as "read".
I use "unread marks" in my email to remind me that an action is still outstanding and so removing that mark inadvertently is extraordinarily annoying.
Coté requests a feature that makes it hard to mark all as read. That would be a good start. An "undo" would also be just fine...