Comments:"Twitter's odd use of the word 'followed' | John Graham-Cumming"
URL:http://blog.jgc.org/2013/05/twitters-odd-use-of-word-followed.html
So, I'm not sure why Twitter thought @plan28 would care who @jgrahamc follows, but that's not the oddest part.
I don't follow any of them.
I suspect that Twitter is keeping a list of people I followed in the past (I at least recognize having briefly followed Douglas Coupland and the Mars Curiosity Rover in the past; although I don't recall ever showing interesting in Time Magazine or Stephen Wolfram).
If I'm right that I did follow those people at some point in the past and Twitter has remembered then it highlights, yet again, one of the important facts about Internet companies: their idea of 'delete' or 'stop' or 'sign out' and most people's are not the same.
Because of this it's worth thinking of things you do on the Internet as public and irrevocable.
If you enjoyed this blog post, you might enjoy my travel book for people interested in science and technology: The Geek Atlas. Signed copies of The Geek Atlas are available.