I have never really understood the idea of a secret diary.
Writing all you hopes and dreams in a book for someone to steal. Or for them to read and then crush all you hopes and dreams. Either way, it can only end in tears.
This is why blogs were created. To show your thoughts to the world, then let the Internet crush them instead. You might be lucky enough to troll someone while your at it.
This why I believe if anything has no place on the Internet, it has no place in excistance.