Except it seems like that might be changing as well.
Enter Kindlegraph. Something I discovered, oh, this morning, and I'm already insanely confused and fascinated. With Kindlegraph, you can use your twitter account to request an author's signature for one of their books, and blammo, receive a new document on your Kindle with the author's signature and inscription...
Okay, so I'm giving it a shot. Kindlegraph, that is. I made a page--http://kindlegraph.com/authors/KierynNicolas--where you can request signatures for each of my two novels (and my short story). Give it a try, and let us know what you think!
Thoughts? Are Kindlegraphs an acceptable replacement for ink-and-paper signatures?