Twitter Unfollows and Signal-to-Noise Ratio (Also, a Chart!)

I don't automatically follow people back on social media, but once I decide to follow someone, I rarely unfollow. Unfortunately, it does happen. The likelihood of getting unfollowed can be determined (sort of) from the following chart.





What constitutes signal?

Anything funny.
News I want to know.
Interesting links.
Talking to me directly (esp. saying nice things to me or retweeting my tweets).
 What constitutes noise?

Follow Friday tweets, thank you's, and any other random list of...