The best way to get lots of people to follow you on twitter, is to create a viral marketing campaign. Lot’s of people are doing it. Their campaign are somewhat similar, from giving a way stuff to random followers, competitions, to giving away free software or ebooks to all followers that helps spread a message.
Let me give you a really fresh example. I think this viral marketing campaign was launched earlier today.
MacHeist is giving away DEVONthink to all followers that completes the following.
1. Follow MacHeist on twitter
2. Tweet this: @MacHeist Yeah, Iíll take a free copy of DEVONthink! http://macheist.com/tweetblast/ #MacHeist #free
3. Watch for a direct message from MacHeist, including instructions of how to download DEVONthink.
So far, this type of viral marketing campaign is by far the best way to spread your message, and get a massive amount of followers on twitter.