Firstly, if you have 8 followers, it does not mean only they can see your tweets. It means that those 8 people will see them easily on their Twitter Home page. Others can reach your tweets through search – on Twitter as well as on Google. Also, if someone reaches your Twitter profile, they will see all your updates without having to follow you.
There are many good ways to increase followers on Twitter and the first thing to remember is that it takes time to build followers you can count on. The followers gained quickly also vanish fast, could be robots and are not worth the count.
If you want real like minded people to follow you, post interesting stuff. Be yourself and be human. Engage in conversations and participate more. Listen to people.
You can converse with me here - http://www.twitter.com/synapseindia