I don't even use any hashtags lol or even use it that often. It's only the odd two or three but still... It's really rather random!
Most Helpful Guy
It's called automated marketing. We social media marketers use programs that go through people profiles through hashtags or followers. So say for example you follow a celebrity or popular page. The bot will go through that celebrity's followers then like, comment, or follow in attempts to get a follow back from you.1
Most Helpful Girl
Some pages go out and like all the picturess they can find to get more likes and follows.3