Ask HN: What sort of tweets annoy you?

I am working on a tool to analyze twitter followers tweets and give some statistics to decide if they should be unfollowed.

Here is a short list of things that I am thinking of including.

  Percentage of Retweets (things like RT, PLS RT etc.)
  Time span of tweets (too often, too fast)
  Duplicate Links to same sites 
  #followfriday people

Twitter is many things to many different people, but what annoys you about some your followers that you would want to filter and see?

If you'd like to keep it private, my address is in my profile.