What is Tweetbomb?

There's a pretty amusing meme called Tweetbomb that's scampering across Twitter right now. I'm not sure who's behind it, but it basically boils down to "tweetbombing" a Twitter user at random with a bunch of @ replies with no other text but the recipient's name. Harmless and very fun.

Here's Tweetbomb's official instructions:

To be on the receiving end of this deluge of attention is to be tweetbombed. I'm not sure if the chief Tweetbomber adheres to a set of criteria when selecting the target, but it must do wonders for that person's ego. There are presently 878 followers involved in these antics - amazing.

Ooh, I wonder if Tweetbomb is the new realization of Warhol's infamous prediction: "In the future, everyone will be famous for 15 minutes." Heavy!

UPDATE:
Today's Tweetbomb was focused on @Bsimi, who had this to say amid the chaos: