Yes, they are extremely good for basically 5 reasons:
- Making into the homepage of Digg, Fark or Shoutwire can increase your traffic immensely for a day or too. It can also increase the number of subscribers to your feedburner.
- The social bookmarking sites give you a lot of new ideas to blog about.
- They increase your earning from Adsense and other sources slightly.
- If your entries can make the homepages of Digg, Fark or Netscape (and any other social bookmaring site) then your confidence level can go very high just like your traffic.
- If your blog entries get picked up by the social bookmarking sites regularly then you can become a star blogger sooner than you expected.
Do you know of any other reason?