Boards reflect male-dominated tech world

[Commentary] We know big-name tech CEOs want no part of the diversity debate. But at least we know who they are. Largely anonymous boards of directors for the tech industry are conspicuously silent and -- for decades -- have been the province of white, older men.

They are equally to blame for hiring trends that skew toward younger, white males, as illustrated in diversity reports recently released by Google, Facebook, LinkedIn and Twitter.

Progress on boards for women has been glacial, and nearly non-existent for African-Americans and Hispanics. White men held about 75% of the board seats on the 500 largest publicly traded companies, vs. 5.5% for male African-Americans in 2012, the most recent year in which data was available, according to the Alliance for Board Diversity.