"A book is a mysterious object, I said, and once it floats out into the world, anything can happen. All kinds of mischief can be caused, and there's not a damned thing you can do about it. For better or worse, it's completely out of your control."
Yes, you'll get an email letting you know when someone else has made a journal entry (I had my first 'successful release' this week!). Of course, many books do get picked up without the person necessarily making a journal entry - I know several of my books have disappeared really quickly, but I've only heard back about the one.
Thanks for answering my question, and congratulations on your first successful release!! I sure am looking forward to my first one, and I will get one even if I have to place books all over my city! :)