Glassdoor released on Tuesday its annual ranking of the best places to work, with Facebook and Google not making the top 5 for the first time since 2010, though the rating change between the top score, 4.6, and Facebook's score, 4.5, was minimal. Glassdoor considers for inclusion in its ranking any companies that have at least 1,000 employees and 75 approved reviews left on Glassdoor's site voluntarily.