Long and short: Amazon introduced a policy that would remove "adult" books from its rankings/best seller lists and thus, general store-wide search results (so, when you search "homosexuality," you wind up with a bunch of anti-gay books). Shock and awe, a bunch of non-adult GLBT books (Heather's Two Moms, anyone?) and apparently some feminist ones have been removed, while explicit heterosexual books haven't. Once caught red-handed, Amazon claimed that this is a glitch. Yeah. Uh-huh. Anyone with two braincells to rub together can tell it's intentional.
After reading this, I kept thinking, didn't someone pull similar shit like this, down to claiming "glitch"? And then I remembered - it was LiveJournal.
And I was just about to pre-order Dollhouse on DVD. But I guess Amazon isn't as interested in making money as much as it is in discriminating.