The great Bookninja collects a trio of articles about signing books.
Getting books signed is a strange phenomenon. As an aspiring author, I think writers should be willing to sign damn near anything. Selling books is a tough gig and if someone wants me to sign a copy of Cat Fancy from 1982, then I’ll do it.
On the other hand, some customers take it too far. When I worked in a bookstore, some customers acted as if getting a book signed was a right, a requirement, as opposed to simply a nice gesture on the part of the author.