GOOD THING: You know right from the start that no holds will be bared and that Giffen will be poking fun at the DCU and everyone involved in creating this book.
BAD THING: Fun as it is, you can't help but wonder just how much of this is a joke and how much of it is Giffen playing The Fool to Dan Didio's King.
Ambush Bug is one of those characters and series that is either hit or miss. Your ability to enjoy it is entirely dependent upon your ability to laugh at sacred cows being tipped over and, in the case of the scene where comic fans are depicted as barely-literate apes, your ability to laugh at yourself as well.
The world might not be able to stand it but I wish they did this as a monthly, if only because we could use more comics parodying One More Day, where Ambush Bug goes to The Demon Neron - not to have his marriage erased from history, but to get a recommendation for a good divorce lawyer. :)