In industries the world over, many employees remain closeted for fear their homosexuality, bisexuality or gender transitions will cause peers and co-workers to think differently of their work. It's an issue in the tech space, too, where females and minorities are also underrepresented and often stereotyped.
Despite the overarching problem, many work environments have created cultures of acceptance when it comes to sexual orientation. Google covers the health insurance taxes of LGBT employees and their partners — a tax that currently doesn't factor in heterosexual marriages. Twitter has similar domestic partner benefits, as well as strict anti-discrimination policies.