I'm sure there are a million more ways, but here are some of the things that have helped my blog grow from 0-1,500 daily viewers in four months.
Content. Consistent and super high quality!
Get active on larger blogs. I have a few that I love and are similar to mine. I stop by frequently, leaving relevant comments and try to get involved (I'm sure to link back to my blog every now and then but not in a tacky or pushy way.)
Also, I use key words in my titles and tags (even dropping in the blog name every now and then for Google's sake). ;) Google and other search engines use those to find relevant sites.
Hope these ideas help!
Google Alt Summit and read some of the articles written by people that were there. Amazing ideas!!
Good luck!
Emily
www.BeautifulHelloBlog.com