How to find and grow a targeted twitter following

Have you been scratching your head on how to grow your followings on social media , especially twitter?
I constantly see my followers go up and down on a regular basis, i have been doing research on how i can make social media work best for my business.
Below is a link where i got some great tips from and that i am now putting into practice : http://www.postplanner.com/blog/grow-twitter-following/