The Ethics of Attention: Bots for Civic Engagement (doalchemy.org)

Not so different from the tweet-bombs that act.ly pioneered and Kony 2012 tried to use. However, there's a big difference in impact between real people taking action on issues they care about, and a bunch of bots unleashed to annoy decision makers. This idea is definitely on the "slacktivism" side of the line.

The problem is that twitter keeps refusing to implement anti spam measures.