Some places, like SFF World, when they do their yearly readers' polls, have a book that is released in a new format during the year's span (tradeback/MMPB release during that time, even if the hardcover release had been eligible the year before), because so few people will be able to read a book released in hardcover or in another publishing region.

I would guess, if a poll were run here, that the vast majority of people here buy 0-5 hardcovers a year, thus making it hard for most here to have read a representative sample of books initially released between August 2009 and August 2010. All she's doing is stating the obvious, that there's going to be a very skewed sample of books here because so many haven't read more than a literal handful of new books.