GLBT advocacy group All Out is calling on Facebook to drop its requirement to choose a gender before joining the social networking site.
The pressure comes after its new social media competitor, Google+, allowed users to opt out of the traditional gender definitions.
Facebook recently altered options on user profiles to include same-gender partnerships and marriages.
The push for major technology companies to be more GLBT-inclusive has seen a number of online campaigns forcing change. Last week Apple removed their iTunes store from a Christian donation service, called the Christian Values Network (CVN), which sends funds to anti-gay groups, after more than 21,000 people signed a petition started on website, Change.org
Apple joined companies such as Microsoft and BBC America, which all ended their relationships with CVN after Change.org members spoke out.
Apple’s rejection of CVN is being used as a strong example to rally for more than 700 other companies still using the service, such as Disney, The Gap, Banana Republic, Target, and Netflix.