Now, it's not often that we get what we deem to be irrefutable proof of our own existence. Was Descartes correct, i.e. "I think, therefore I am?" Who knows.
But I now have what I consider to be proof of my own existence, at least among literary circles. So, without further ado, I hereby present the proof I exist:
The official Shelf Monkey ISBNs!
Are you getting shivers? Oooh, it feels so good!