http://www.masternewmedia.org/rss/top55/

*As more and more people get involved with the Internet and as more Web sites, blogs, news services and other online resources continue to grow in number and variety it becomes increasingly important to maintain high visibility and exposure for the content being generated by closely following the major distribution media.

Until now the web was populated by Web sites and other HTML-based content pages, and the main vehicle for reaching content has been the large use of major search engines and directories.

As a rapidly increasing number of content sources, new and old, migrate or add RSS as a key distribution channel, and as more people utilize RSS newsreaders and aggregators to keep themselves informed, the ability to maintain high exposure and visibility is gradually shifted from a complete attention to major search engines and content optimization techniques to an increasing awareness of RSS feed directories and search tools.

If until now the world of content optimization online went under the umbrella of SEO (search engine optimization) and SEM (search engine marketing) from now it exist, at least in principle the opportunity to grow another complementary field tentatively called RSSEM (RSS search engine marketing).