Marketing expert Seth Godin has written about how to get traffic to your blog with 56 methods listed. A few of my favorites:

#2 Be topical… write posts that need to be read right now.

#3 Learn enough to become the expert in your field.

#4 Break news.

The most important one though is his last one.. #56. Write stuff that people want to read and share.

This is the way to get comments, trackbacks, posted on digg, slammed all over del.icio.us, and just about any other social meme that you can think of…

Write about something interesting that people want to read and share.. and the traffic will come your way..