If you want real followers just be active and use hash-tags (#). You can always pay for followers but a lot of the time those followers unfollow you after some time. You can also try paying for tweets where you pay someone to tweet to their followers about you or your site/blog.
Post lots of interesting, useful or funny Tweets often, but not too often. Also, follow others and talk with others on Twitter.
Don't waste your time get more followers if your plan is spamming them with affiliate links or CPA offers. Search your follower base on interest only. Follow only those who have same interest with you can and start engage and communicate with them. Profit comes from reputations and I dont think spammer has lots of it.
To get more quality twitter follows: -Make sure your profile is complete with an avatar that shows your face and a solid bio -Tweet well and tweet often -Follow people who follow people that are like you -Ask people to retweet you -Search for tweets with keywords related to your topics of interest -Use hashtags -Regularly unfollow people who haven't followed you back -Repeat your most popular tweets
Start following people...you can start with your friends and close associates and ask them to follow you back. When you have around 50 followers you can also try Twiends...just do not overdo things otherwise Twitter will flag your account.
If you need you can buy Twitter followers, I can sell you at very very CHEAP price. 1$ for 1000 followers.