Two things are going on right now of relevance to indie writers:
1. Lots of B&N authors, on Kindleboards and the PubIt Help Board, are reporting massive drops in sales (possibly due to a problem with keyword searches over there). Some people on the PubIt boards are saying their sales are down 90%. B&N does not seem to be responding to most emails requesting info on the situation.
2. Lee Goldberg reported that Kobo was discounting titles (violating their agreement with Smashwords), that Amazon was price-matching, and that he was losing a whole lot of money as a result. Others on KB said they've had their prices lowered at Amazon as a result of this, too. This is not Smashwords' fault, and Kobo claims it's a "glitch," but the problem has been out there for a couple of days and still hasn't been resolved, resulting in a loss of income for Lee and others.
Once again, this is just a reminder that indie writing can be a bumpy road, and that odd and unexpected events may affect your income despite your best promotional efforts.