Whatever happened to the good old days when calling a book a "bestseller" really meant something? Mike Banks asks that question on his blog and I think he makes some very good points.
What list is this a "bestseller" on? The New York Times? The Wall Street Journal? Publisher's Weekly? Barnes & Noble? Amazon? While it helps to quantify the claim (e.g., "more than a million copies sold"), I'm to the point now where "bestseller" feels like "whiter, brighter" on a box of laundry detergent: It's a phrase everybody uses and therefore has almost no significance.