Twitter Followers increase gradually, man. Build your reputation. Tweet Quality and Great News, you'll surely get many followers.
You can use twellow if you are targeting specific people in your niche. And the best rule of all is to follow those who follow you. Plus tweet often atleast one post a day will do.
Using ww.hootsuite.com you can send scheduled tweets - its tweeter on autoresponder. You can select RSS feeds for quality content on your tweets. The best part is hootsuite.com is FREE.
The type of followers you need to have are Targeted followers. Just be yourself, interact with them, keep up with what they are interested in, and learn what tweets they like to follow.
Exactly. This used to be easier back in the day before Twitter put a cap on how many people you can follow in a day (I forget what it's down to now, 100 or 200 people a day max). I remember I used to have an automated Twitter follower I would let run all night. I'd wake up and I'd be following 4000 new people and I'd have 1800 new followers on autopilot. Ah the memories
Mass follow brings you the followers fastest but they are lowest quality as many of these work automated. Posting quality content (like stated above by others) brings you the followers much slower, but they are much higher quality and actually interested in what you tweet.
I have to agree with what everyone is saying, the quality of your tweets is whats most important. Twitter is not a #'s game but a quality game, you have to follow people who are interested in the same things you are and who will reply. Its a good idea to start off with people you know or work with. You can see what they're talking about and find other people through them. Building a successful and useful twitter is a lot of work and a large time commitment but its good to have that resource down the line!
Here are all the details. You can follow 1000 per day if you do this correct. See our post on the subject. http://redfoxseo.com/2009/10/getting-mass-followers-on-twitter/
I am also looking to improve the followers area for one of my website. http://www.sybotechnologies.com