Not much that is new to say on the London bombings yet but I can recommend John Robb's analysis at Global Guerillas
in the meantime regarding al Qaida's probable evolution toward " Open Source " warfare. I don't think they are quite as far along that curve as Robb does, there are alternate channels of communication, albeit slower ones, that may be keeping the top tier of al Qaida leaders plugged into the operational decisions of their national terror franchises to a greater degree than we realize.
I have a wedding to attend today, a friend from way back in grad school so posting will be light until late this evening. I will probably put up another book review though, either The Sling and the Stone
by Thomas X. Hammes or The Coming of the Third Reich
by Richard J. Evans. Put your money on the former because my copy of the latter appears to have grown legs and wandered off somewhere.