You are right there, however, if that post contains some personal information that should not otherwise be published publicly - perhaps one of the admins/moderators would consider at least editing the post and deleting that information.
I also doubt any of moderators do so.
Posting personal information of others outside the "investigations" board is against the rules and such posts should be deleted by moderators, but it's not against the rules if you post your own personal information.
For more information, read the post made by theymos.
1. Personal information must be confined to the new "investigations" board (under Scam Accusations), which is only visible to Members and above. Personal information is defined as anything which links a user's online identity (username, email, etc.) to their meatspace identity, excluding links that the person himself has posted. It is not allowed to post somebody's personal information in any other public place, including in signatures.