Deja Vu in London - sorta

[Ghoulish Delight]

http://www.msnbc.msn.com/id/8655541/

3 explosions in subway stations, one on a bus. Sound familiar?

These explosions were tiny. Only one person has been reported as injured. The damage to the bus is minimal (the bus company says windows were blown out, police say they saw no damage).

Sounds to me like a hastily thrown together copy-cat attempt. I think the question will be, was this just a stupid prank that someone thought was funny, or was it done with actual terror motivations?