I found a site some of you may find useful for streamlining the social bookmarking process. The site is called http://www.socialmarker.com/ and is useful for submitting your site/article to the top 50 social bookmarking sites like digg delicious etc. Just type in your site/article information in the top right and your then it takes you to each site with the forms already filled in and you just hit submit. Another handy feature is only submitting your site to dofollow social bookmarking sites. I hope this is helpful for everyone.
I guess I should have clarified. It is not automatic, it is simply helping to speed up the process of manually submitting to each site. I agree with you about automatic submissions though.