Twitter - You cannot make much impact unless you have huge number of followers. This was true but not any more. Twitter search is a quite interesting page that will help you to find some targeted visitors.
Trending Topics will gives you a idea what twitters are tweeting about. Include some thing related to trending topics in your blog website and start twitting with the trending keywords. You will be amazed how may will visit your link and retweet it (if it is interesting) and they will start following you.
Regular tweeting about interesting facts about trending topic will generate more and more targeted traffic. It gives a plus impact on AdSense Revenue as well.
Link to this blog - Link to this blog is a nice and cool feature you can find in blogger blogs. It will allow you to re-post the original post in your blog that will leave a link to your blog from original post.
As long as you find the best blogs in your topic and link with them will bring 100s or 1000s of visitors to your blog. AdSense impact is quite amazing as well. Gmail Blog and Google blog are few of the blogs I found interesting when it comes to talk about Computer and Internet.
Using Social networks like digg.com redit.com are couple of other methods you might have using for sometimes.
All these methods can generate quick traffic but next hour or day it will drop back to normal. Interesting content and traps (news letter sign ups, RSS feed sign up, book mark tools ) will able to catch some of these traffic and they will be come regular visitors to your web site.