The symbolism of Abu Hamza's sermons going through the plumbing system is just too good. More on [1] this story. "Hate preacher Abu Hamza secretly gives lectures on Islam... through the water pipes of his prison cell," by Rebecca Camber in the [2] Daily Mail, November 17 (thanks to Kris):

Hate preacher Abu Hamza is delivering extremist sermons to prisoners through the water pipes of his cell, it has been claimed.

The Muslim cleric is defying a preaching ban imposed by prison bosses to radicalise inmates.

He is able to give his lectures through the plumbing that connects to neighbouring cells in Belmarsh Prison....

The Quilliam Foundation, a counter-extremism think-tank, has called for the 51-year-old to be removed from the mainstream prison population.

Its report on growing prison radicalisation says the authorities have tried to stop him giving sermons openly.

But a source told the thinktank that Egyptian-born Hamza has found a way to talk to his fellow inmates - through the pipes....