This app tells you your personality by looking at your Tumblr account. You should really check it out. This is my result:

ESFJ PERSONALITY

People who share the ESFJ personality type are, for lack of a better word, popular – which makes sense, given that it is also a very common personality type, making up twelve percent of the population. In high school, ESFJs are the cheerleaders and the quarterbacks, setting the tone, taking the spotlight and leading their teams forward to victory and fame. Later in life, ESFJs continue to enjoy supporting their friends and loved ones, organizing social gatherings and doing their best to make sure everyone is happy.

I was going to delete this after seeing what it was but I’m so deeply amused I’m keeping it. I pretty consistently get INFJ on tests, so it’s half right, but oh my god it thinks I’m an extrovert. It thinks I’m popular.
Although the last part isn’t entirely off so I’m going to sit here questioning everything for a little while.