You have to admit, the social dynamics of Twitter are worth a chuckle, especially when you try to explain them to people who aren’t into it:
You overhear something someone says.
For some random reason, it intrigues you.
So you start following them.
And listening in on their conversations.
And repeating what they say, verbatim, to your friends.
You even start following their friends too.
Until some minor thing they do annoys you.
(“Oh, come on, not another #iphone hashtag!”)
Then you dump them immediately.
You repeat this pattern a dozen times a week with complete strangers.
Everybody considers this perfectly normal behavior.