The rioting is also about looting. Ebay and Gumtree though are doing their part and will not sell the looted goods. Just as the internet has been used to coordinate the riots, so it has been used to identify the guilty.
How poor is the poor if they have phones and internet connectivity to coordinate the riots? It is going to get them caught. Phones have GPS systems; they are carrying around a location device. How smart are these rioters? Can they read past a 140 character twitter message? Loot any good books lately? No.