Updating a top social bookmarking sites list can be difficult but should always start with the oldest, most reliable websites such as reddit, stumbleupon, delicious, twitter, pinterest and a few others. If you do this work yourself then you will want to focus on these core few, as the others are important but won’t have the same impact on your brand exposure or search engine rankings. Because of this we use Bookmarking Beast http://www.bookmarkingbeast.com which updates its database of thousands of social bookmarking sites and submits for you automatically each month.
