The purpose would be related to stock market investing. One involved with working for an investment firm, for instance, would want to know "better than expected earnings," or a company releasing a "disappointing earnings report." Could a business search engine be found, better than the rest, that would sort through multiple financial sites and information to be on top of the earnings release, or other significant event as soon as possible?

Yahoo keeps calendars of those types of documents. Here is a link to the earnings calendar, but tabbed across the top, you will see other types of documents. Or, select a stock and find ALL documents under that stock.

google