There are many ways to increase your followers and one of them is TwitterGeek !
The concept here, you follow first in order to get followed. Unfortunately there is no guarantee that they will follow you back, but its worth the try. Plus there is a benefit of expanding your knowledge about specific keywords/topics, by looking at other twitter accounts with similar topics as yours.
Here is what you should do :
1- Insert the keywords about the topic that you care about.
2- TwittGeek will find 200 users who have similar match.
3- You will start following them automatically.
In my opinion the use of automation tools is a leverage that every entrepreneur should consider to do.