Most H1B Visa in 2013 were granted to temp worker agencies (Indian Companies): Here is this stat
top 10 H1B visa Sponsors in US
1) Infosys (India based) 32,379 visas
2) Tata Consultancy Services (India based) 8,785 visas
3) Wipro (India based) 6,733 visas
...
10) Satyam (India based) 2,249 visas
These agencies provide workers for 2-6 months contracts that requires in most cases no special skills and pay 30-40% below market rate. These agencies have no physical structure in the US that can accommodate all the people that they bringing in the US.