By default, all new accounts on Atlas Quest are set so an individual's finds are private, so most private logbooks are probably like that simply because the person hasn't changed their default settings.

However, some people may explicitly choose to keep their online logbook private for any number of reasons including (but not limited to):

• They might have a cyber stalker
• They like their privacy
• They feel that what they've found is none of your business
• They feel it helps keep mystery boxes more mysterious (for the most part, this isn't a problem, but in certain rare cases, it might be possible to figure out the location of a mystery box from online logbooks)