Using social networking can help market your site to a big audience which is essential for your blog’s growth. Spend some time networking yourself and submit your best articles to find more readers:

1. Digg - Stories and submitted and voted to the front page by the community
2. - A social bookmarks manager. Using bookmarklets, you can add bookmarks to your list and categorize them
3. StumbleUpon - Channel surf the internet with the StumbleUpon toolbar, can be a huge source of traffic
4. Reddit - User-generated news links. Votes promote stories to the front page
5. MyBlogLog - Free site stats, and a cool widget to find out who’s been visiting your site
6. LinkedIn - Online network of 11 million experienced professionals (including bloggers)
7. Facebook - One of the fastest growing social networking sites on the net
8. Myspace - Free social networking which has blogging capabilities and ability to attract a lot of friends!
9. Squidoo - Set up your own lense (sub-site) and spread the word about your blog

source: 101 Essential Blogging Resources