Winner is Go by a large margin. 6.5X more demand
http://jobdensity.com/QueryGrid.aspx?q=906&t=node.js&qt=6/27...
http://www.jobdensity.com/QueryGrid.aspx?q=907&t=go&qt=6/27/...
http://jobdensity.com/QueryGrid.aspx?q=906&t=node.js&qt=6/27...
http://www.jobdensity.com/QueryGrid.aspx?q=907&t=go&qt=6/27/...
http://www.jobdensity.com/QueryGrid.aspx?q=923&t=java&qt=6/2...
http://www.jobdensity.com/QueryGrid.aspx?q=924&t=go&qt=6/28/...
http://www.jobdensity.com/QueryGrid.aspx?q=912&t=Python&qt=6...
http://www.jobdensity.com/QueryGrid.aspx?q=913&t=node.js%20p...
http://www.jobdensity.com/QueryGrid.aspx?q=914&t=go%20progra...
Best way I can think of to overcome this is search for "golang" [1], but that's going to undercount by a lot. I think really you can't draw any conclusions from free-text search engines.