How do people get so many followers on tumblr?

[Carly]

People on tumblr have thousands of followers and i have like 350. I have noticed that MOST of the people with a lot of followers have a simple everyday words like "breaking" "spongebob" "cooler" "rad" "pizza" and I feel like all their blogs are exactly the same and reblog the same stuff like robots. I think my blog is a very quality blog that deserves more followers than I have. So is there a way to get more followers? I really want more

[Harry]

The way they do it is by buying followers, it's quite unfair but that's how it works! Also if you buy followers then people would be like "this guys got loads of followers let's follow him"!
Hope that helped

[Ella-Grace]

they can:
interact w/ followers
do reblog/like promos
be in networks
interact w/ other users who have the same follower count
reblog a lot

tips:
have a clean and nice theme
have a simple url with less hyphens
reblog other people's first __ promo's, blog rates, etc
ask other people with the same blogstyle to check out your blog [read their faq first]
have a queue on when you're not online
make friends w/ other users
try random promoting on tumblrplug.com!