As it turns out, a lot of the operations provided by RSSBus work great as lists using Microsoft's Simple List Extensions (see previous post if you aren't familiar with SLE). As an example, consider the yahooStockQuotes operation. If you only wanted to be able to track the latest quote of your favorite stock(s), a list would work perfectly. No need to store historical items about previous quotes in your feed reader. If your reader is smart enough to analyze historical data and give you charts and...