LinkedIn recently asked thousands of its members to volunteer translation services in order for the site to expand internationally. A multiple choice question survey was sent to these members with questions such as how they would like to be compensated, "with five nonmonetary choices including an upgraded LinkedIn account and none ("because it's fun")." Many such members were outraged that they would be asked to provide their professional services for free. LinkedIn argues that rather than trying to rip off its members, it was simply going for the Wikipedia "crowd sourcing" method.
I personally have a number of friends working at various translation entities who are connected to
me on Linkedin.com. I'm sure they loved this one.
Every company would like the things they purchase (including knowledge work) to be free.
They just usually aren't too keen on selling their own stuff that way.