Improved social media will only stimulate the growth and cyber capabilities of the JIHAD.
You can find in the demographics of Western Asia and Africa the root causes. There is a growing population of over one billion now maturing into angry (and well informed) young men and women who have no employment or no prospects for social advancement except through the adoption of medieval doctrines.
Fixing Google, Facebook or Twitter are not the right topics to address for dealing with the rise of JIHAD. And neither is Obama's address to make gun ownership more difficult or airline travel more onerous.