It's not easy.
I hate telling you that especially when you don't want to hear it but it's better you start reading this post of with the truth than some blog thats feeding you a bunch of baloney. It's obviously going to take alot of time because the more you time you send publicizing your blog, the more people will notice it.
1. Join all the group related to blog and put yourself out there. Here's a new one that will close after having 100 members so it's a smaller aggregator only meant for comments. http://www.facebook.com/group.php?gid=233819112286#/group.php?gid=233819112286
2. Follow up on what you have commented on. Try to find bloggers with common interests so you can be genuine in your comments. ubscribe to a notification for follow up comments so you let people know that you have read the replies to your comments.
3. Invite people to comment. Not everybody is facebook savvy. Sometimes they're more inclined to hide in the shadows unless you call them out. Triple dare them to post a comment.
If you really are in the mood to read I have accumulated data from various sites and put them on here:
Ask! – Ask for people to comment, you are more likely to get comments if you ask for them. Sometimes people do not know it is ok to comment. Just because there is a comment form does not mean people automatically feel worthy to post a comment. The higher the profile of the blog or the less the person feels they “know” the blogger the less likely they are to comment. By “giving permission” they will feel more entitled to comment.
This is by http://performancing.com/10-tips-for-attracting-more-comments/
Seed - Like a tip jar, people sometimes need a hint, get friends to comment to start the ball rolling and you might open the floodgates. On some blogs people like to be first, on others there is a hesitation period where they do not want to expose their opinion to early.
Ego - People like to talk about themselves, provide the opportunity. They might not be experts in the topic but we are all experts in our own experience and we all know what we like. You know the famous phrase about everyone having an opinion. Sometimes it is nice just to give people the opportunity to brag.
Links - Bloggers and webmasters are always on the lookout for link opportunities. They might not be your ideal kind of comment but they might encourage others that it is ok to feedback. Allow link drops in your blog comment settings and do not use nofollow so the link visibly has value.
Hint - Open questions are the best to get great quality answers, ie. “What do you think?”, but they can be intimidating. If you struggle to get comments it might be easier to give simple leading ideas for what people should say, eg. “Do you agree?”, “Are you for or against?”. “Yes, no, me too” are not great responses but at least they are a sign of life!
Restraint - Resist the urge to make your posts too complete if you want to receive community input. That’s one of the great things about top ten lists, you have to stop at 10! Don’t put everything into the post, especially if you know your audience has certain expertise they are bursting to share!
Usability - Sometimes people don’t comment just because they can’t! Make sure the comment form is obvious and easy to use. Also do not take the visitor to a different site in order to comment. The very worst culprits for this are the hosted services that not only take you to another site, they use a popup to do it. Why not inflict actual pain while you are at it?
Open - While a blog with a true membership is more valuable, if you are having difficulty getting comments open up your comment settings to allow comments with out registration. We can get away with requiring registration because we knew we would get the comments, consider carefully if your blog can get away with it too, many can’t.
Topic - If you want to attract comments then you have to pick your subjects. Some subjects people just do not have an opinion on, others you can’t stop people talking about. Current affairs are good but it needn’t be contraversial, politics and religion get people talking but can also send your blog down a path you might not want to go down. Press peoples buttons. You can endlessly recycle some topics, others are shortlived.
Observe - Note the topics people often comment on, there might be a trend. Just be observant. Be on the lookout for topics people comment on and write about them.