Work & Travel USA | CIEE: Council on International Educational Exchange
Best sponsor company I've worked with. Very good information there. Work / travel program gets a J-1 visa for 4 months.
The Barnstable Patriot - Visas bring summer workers and global ambassadors

I used to hand out J-1 invites like candy but I got burned a couple times.

"Starting for summer 2011 the U.S. State Department has announced that all participants coming from Bulgaria, Russia, Ukraine, Moldova, Romania and Belarus require a job offer that has been confirmed by a J-1 sponsor before their visa interview. These countries make up more than half of the number of international seasonal workers. This rule change will have an impact on hiring."

Don't worry too much. A good recruiter will find a job for you.