Ok I will wait.
Btw I just learned that signing such a generic message may be a mistake because someone else could use it to impersonate me...:
Impersonate or not, as long as you only have your private keys for yourself, no one can create/sign a message using your address no matter how generic your messages can be. But to play it safe, add what's the purpose of the message, the date you created and signed the message and you're golden.