1. A method comprising: processing two or more independent RSS data feeds to generate two or more RSS market-specific searchable RSS datafeed archives, generating, using a master search engine operating on at least one computer server, a query plan based on an input received from a user; applying, using slave search engines, at least two different sub-queries to the searchable RSS datafeed archives to derive information based on data in the searchable RSS datafeed archives, the sub-queries being part of the query plan to determine a result based on the derived information, wherein: at least one of the sub-queries is applied to at least two of the searchable RSS datafeed archives, and at least two of the sub-queries are applied to the same searchable RSS datafeed archive; determining the result based on the derived information, and generating and serving by a computer server an RSS feed that includes the result.