I know I'm a bit late to the party, but I've just discovered a website called Kindlegraph, where you can request authors to sign your ebooks.
How cool is that!!!
Kindlegraph is the brainchild of software developer, Evan Jacobs, and was launched in 2011. There are currently 3,500 authors representing over 15,000 books and I guess those numbers are growing daily as word spreads.
I've already signed my own books up to the site and was ridiculously excited when I started receiving my first Kindlegraph requests from readers. My signature looks a little shaky, as I have to write it using my laptop trackpad. But it is my signature. Another great element, is the option for the author to write a personalised inscription to each reader.
Now I'm looking forward to requesting Kindlegraphs from my favourite authors.