The ebook store keeps making me
They keep sending me ads (alas, no coupons these days. When I first got my ereader, I'd get at least one a month), that are supposedly "targeted" based on what I have bought previously. Which makes me laugh when about half of what they "recommend" is absolutely nowhere near the type of thing I buy, and some of what they recommend I already own (in "real" book form). But the best ones are when they recommend a book I already own - and bought in eformat - from THEM.