Such is the reason the only game I play is a Quake clone (Urban Terror). It is mostly bug free, runs on cheap hardware, and most importantly: it is very fun (due to the great gameplay.) It also has a great community (with a lot of hackers/nerd types.
Answering them: Could net some love from the market.
I would create a template message explaining why you did not answer (be honest), why you are answering now, and asking if they continue to use the app so that you can support it properly.
It won't hurt because most people won't care. Those that do will most likely appreciate it.
Given the amount of capital that B&H needs to invest yearly, this is a natural choice.
Buffet likes banks, he said so in the book The Snowball (a must read). Banks have float, which is interest free money "floating around" waiting to be invested by the bank, but not owned by the bank.
BOA also sells insurance, which has more float than a bank. B&H has a pretty effective group of insurance business people. A lot of the B&H wealth comes from the insurance industry.
Create new ideas (be a pioneer, and get arrows on your back as a result).
Or
Improve on existing ideas that already have a defined market.
Just like pinboard improved on delicious, this could end up improving on the Q&A formula.
Their current approach is innovative in terms of presentation. It looks clean, simple, maybe even Apple-like in terms of grid-like alignment.
They need to differentiate the comment/solution issue. It is a good feature. The question allows for more data to be provided by the OP, but it is rather bland looking and gets lost in the gray background. Make the question textbox a light yellow to better contrast it.
I see this growing as a mix of different Q&A models. Time will tell.
I want to get away from Q&A. It's not just arbitrary questions, it's your friends with real needs, and your neighbors with real knowledge, or whatever.
But: think of this as "create new ideas" but clothed in current UX. There's a lot more to this idea, but we needed to ship something so that we could start iterating with interaction from the public.
I reason they have not. Bing, the .NET framework, the OOP languages and IDE, Interet Explorer, XBOX, etc. are all mentioned in that memo, and are succesful divisions/products.
I don't know of any other company with such track record (if there is, please mention it).