Owing largely to a dearth of time, my online activities have been limited mostly to Twitter. Today, a tweet I sent as an offhand comment to the proprietor at Balloon Juice appeared in a front page article. This one.

Each alert that someone had “liked” that tweet or “reweeted” it or responded to it in some other way was like a little reward.

When I think about it, though, I suppose that it resembles the bells and flashing lights so enjoyed by the folks at the slot machines in Las Vegas.

We are so very like trained rats.