So, at one point when I worked at Yahoo, there was an organization called, "SDS." Near as I ever could tell, there were consultants were were at Yahoo and also employees (double dipping in similar fashion) but that could have been my misinterpretation of things. There were a few people who were contractors, then employees of the company, and who's former company still had contractors working at Yahoo at the time. It's interesting to see this happen now, so many years since I've worked there.