I have not used my Twitter account for over two years, yet it gathers about 3-4 new followers a week so there's a significant amount of pointless activity creat

I have not used my Twitter account for over two years, yet it gathers about 3-4 new followers a week so there's a significant amount of pointless activity created by automated processes that just follow people based on keywords - or maybe there's a lot of people who like my extended period of thoughful silence.