I don't know about the main Trilogy, but in Stack Exchange 2.0, diamonds can edit the FAQ's top section to insert extra wordings and stuff.
Apparently, it consumes a post. I learned this because apparently the FAQ on Programmers is Post #1462. I don't have an account there, so it's fully visible. I can see arguments in both directions; restriction is good since only diamonds and above can modify it, but the FAQ is viewable by everyone so it's not exactly a secret thing that needs to be obscured.
If the intent is not to make it public, could you not list it right in the activity summary of our profiles?