What the FAQ doesn't explain, is that the tool has no effect on entries that use Custom Friends Groups. In order to verify this I had to go all the way back to the original paidmembers post (linky).
I see this being a problem for people who want to be sure what will happen before they use the tool.
I suggest that either wording is added to #120 to make the situation clear, or a new FAQ is created in the "Premium Features" category, entitled "How do I change the security of multiple entries at once?" and the link to the security tool from #120 is changed to point at the new FAQ.
Additionally I suggest that "FAQ#24 - How do I control who can read my journal entries?" link to either the new FAQ if it's created, or simply to the 'Edit Journal Privacy' tool, as it doesn't mention it at all, currently.