Waiters like to work in pricey restaurants serving wealthy patrons because they are able to pay for high class service. That's also why you see so many professionals in the banking industry: it pays to work for people with money. Xignite took note of this and decided to become the Maitre'd of information to the financial industry. With more than 3.5 Billion calls per month to its Xignite APIs, it is doing a fine job of it, as well.
Last month The New York Times released its own map mashup: Represent. This month the major media player has released a Best Sellers API, which provides developers with access to best sellers lists from several categories (view our new Times Best Sellers API profile).