Trendsetter or merely head of the herd?

A new book I’d ordered from the local bookstore came in yesterday. When I walked in to buy it, one of the old-timer employees commented that when he sees me placing an order, he stocks up a bit on the book – that the SF and fantasy books I order tend to sell well.

I already knew that I’m one of their best customers. After all, I buy a new book roughly every two months! (Which is kind of scary when you think about it. What, does the average American buy less than one new book a year? ...)

It just left me feeling slightly odd.