Workers making more than $100,000 in yearly salary,

U.S. tech workers, ... are increasingly nervous about employers' use of temporary non-U.S. citizens in tech jobs. The most anxiety comes from the most vulnerable.

I was concerned for everybody else, my co-workers.

Just about everyone wants to strike out on their own sometime. But they won't do it for the money -- what they're looking for is more control over their professional lives.

In fact, most told us that companies are very reluctant to allow frequent telecommuters to manage others -- 29 percent cited that as the single biggest negative impact that telecommuting had on career advancement. Many also said that telecommuting seems to slow down raises and bonuses.

Seventy-two percent said they'd use their ex-supervisor as a reference in finding a new job,