Here is an example of a dynamic Excel spreadsheet that populates itself with data from an RSS feed of stock quote details. Each time you open the document, it will automatically reload the data from the feed. Also the feed, while open, will even auto-refresh periodically (whether or not this happens and the interval at which it happens are all configurable inside Excel). The stock quote feed itself is generated using the RSSBus yahooStockQuotes operation (pictured below) which consumes a Yahoo service....