Submitting web site to directories is popular link-building strategy. Site Submit (beta) is a simple semi-automated web site submission software which can speed-up the directory submission process. The main advantage is that it's free, however (if the public is interested) I plan to add more features, more directories and some sort of online updates... The tool comes with more than 5000 seo-friendly ("dofollow") directories in the database (although most of them are not yet manually tested by me).