Building up twitter followers?

This must have been asked here before but I was unable to find any threads.
Whats the best way to build up followers? I have 29 so far which is terrible compared to other sites.

I have a twitter button on my site any other ways?

Give them a reason to follow you. You either have to network and get to know a lot of people, so that they feel they know you and have a reason to be connected to you online, or your tweets need to be valuable enough to some group of people that they want to follow you to see them. Building a network online isn’t much different than building a network offline.

Yes, using the Advanced search can be a bit troublesome. After some experience with using it I don’t do so bad though. These links should give you more than enough information:
How I get quality followers in Twitter
How to make more follower than following in Twitter?
How do you get more Followers & Fans
Does following a large number of people increase your followers?
Twitter not sending any traffic to my website even i have 2500+ followers
Twitter followers
How many followers actually read your tweets?
How do I get Twitter followers?