As a side note, this would be a good opportunity for Twitter to look at a mute feature, which roughly would be the new blocking behavior, just implemented alongside the block feature that forces an unfollow. Third-party apps have been doing this for a long time; it seems to make sense to give people the ability to curate their feeds more carefully if someone is being loud (like live-tweeting sports, for instance).
Blocking, even on a public account, is surprisingly effective at dealing with low-grade harassment. Most harassers just aren’t that invested in the person they are bothering, and putting up the tiniest roadblock will make them move on to their next target. I had this conversation with a Googler shortly after G+ shipped, as its blocking behavior was at the time the same as the new Twitter behavior. I have no idea what it is now because I hate G+ and don’t use it, and I realized that this may be unintuitive to someone who hasn’t experienced harassment before – but trust me, as someone who has, it works a lot of the time. Which is great!
I’m trying to get into Path more. While the idea of a social network with an extremely low friend limit (150 friends) is hard for me to grasp given my assumptions that anything I publish online is for public consumption, I’m won over by its excellent design — indeed, it has a timeline implementation that Facebook could only dream of — and its ability to be a universal publisher to the big four social sites (Twitter, Facebook, Foursquare and Tumblr).