Ping Kaching is the best Engine Optimization Software on the market! It does RSS, Directory Submission, Search Engine Submission and Social Bookmarking all as a defualt basic package.
RSS (most commonly expanded as Really Simple Syndication) is a family of web feed formats used to publish frequently updated works-such as blog entries, news headlines, audio, and video-in a standardized format.
A web directory or link directory is a directory on the World Wide Web. It specializes in linking to other web sites and categorizing those links.