Can someone please answer this question i have about twitter?

[Nicholas]

I've seen MANY quote pages on twitter, and i was just curious how they got so many followers. For instance they'll have anywhere from 10,000-400,000 followers and they'll only be following like 100?
Some examples, @Rene, @ItsAYYSIAN, @ohteenquotes & @DamnRightTweets.
I've started my own little quote page, called @myswagtheory but i really don't know how to get followers, i have good tweets but no followers?
Somebody please help me out!

[sabrina]

Do follow for follow
Soon people will start retweeting and you'll get bigger and bigger

[RJ Goodhouse]

Those Leaders or people with interesting things to say. they tend to lead the way with their own lives and just don't have the time or need to follow others. 80% of people at followers