I agree with you about doing one thing really well. A little off topic, but: I think DropBox is missing a revenue opportunity by not having a yearly package for something like $20/year, for perhaps 20 or 30 gigabytes. I am not a paying customer because my use is well within the free tier, but I would pay for a smaller package if it was available.
I'm also frustrated by their tiers. I think they're worried that casual tiers would eat into their profits, so they only offer "slightly not enough" or "way too much".
