I assume you saw the bug report at the end of that last post. Also, as a reply to myself, I paid only myself, but presumably that's intentional or at least works out for practically free threads (assuming it doesn't get abused)? Notification for "custom tip" by that reply said it was anon, though...
Discussion
Yes, you can reply to yourself - which boosts your previous post. We might need to add an exception so that replying to yourself pays Selene instead to prevent abuse of people boosting their own content.