Well, I am not sure whether you meant my thread. Anyway, I hadn't opened it in Meta, but TC opened it on the correct board next, it became more popular, so I just quoted everyone on my thread in his thread.

Why I asked signed messages was:
1. To avoid someone from posting addresses he cannot sign. It is really simple to confuse for someone who is new to this, so my thread made signing address mandatory.
2. To make people figure out how to sign the message first, rather than trying to figure it out then.
3. No one can post someone else's address (assuming date is included) due to error or for fraud.

It is a good way, if you prefer awareness over simplicity.