How do people get massive amounts of followers on twitter?

[The sandman]

There are a couple of ways to get a large following. If you are interesting and you post updates which people enjoy reading then your following will rapidly increase. The other alternative is to use software to find targeted people and automatically follow them. You can do this process manually by going to the Twitter search stream (search.twitter.com) and manually add people by keyword.

This is a very effective method of building a following but it is laborious and time consuming and I'm far to busy nowadays to do that without software.

At the end of the day you have to decide why you want a large following, if it's just for your "ego" then stick to the manual method, if however you are like me and you rely on Twitter for site traffic, leads and sales then you really have no alternative but to opt for the latter.