Techdirt: How Not to Price (I’ve seen this quote before in a “things I’ve learned” type interview — very good advice)
However, it seems that they’ve screwed up one of the most basic rules in pricing: never take away features and charge for them. You can charge for new features – but taking away features that were included for free before always pisses off your most loyal customers. They feel suckered. They feel like you’ve pulled a bait and switch on them.