Since getting across to a continuously increasing number of people is the key point
of any marketing strategy, you should also use the social media sites plus RSS combination. Social media sites like twitter and facebook are a great way to stay in touch with your subscribers. Services like twitterfeed lets you post your RSS feeds directly to your social media accounts. Another such service is the facebook based RSS graffiti that transfers your RSS feeds on your other sites to your facebook wall postings. Not only that, your RSS feeds start appearing on the newsfeeds of your friends and fans.