This is a list i have compiled to make my work easier when i submit new sites to social bookmarking sites. (You can also submit important sub-pages of your site.) Even if you can find hundreds of social bookmarking sites in lists all over the place, believe me that more than 70 % of them are changed, don't work or they are already parked. I know there are all kind of paid automated or semi-automated methods to submit links to bookmarking sites, but for those who are savvy then this can help. Enjoy this list of good working sites, there is the method of submitting the link next to each site. ("Bookmarklet" is a button that you can drag into your browser's links bar and favorite your links with it.) I spent a total of 10 hours in 2 days to promote 55 links in all these 50 bookmarking sites. You can too, and i think it's worth the time. Good Luck!