https://maletsabisam.wordpress.com/2013/02/13/usability-guidelines-for-open-...
FLOSS Outreach Program for Women intern Maletsabisa Molapo is working on a usability guidelines project
"For our User Experience-at-large project, we are working on producing a guidelines document on how human-centered design techniques can be best incorporated into the development of Open Source software, to improve the usability of open source tools....
"Our guidelines document will also seek to answer the question of how, then, can open source tools be developed to cater for internationalization and diversity? Recommendations will be made after our discussions, surveys, and interviews with developers, designers, product managers, and users.....
"The target audience of the document we are working on is the developers and designers who contribute to FOSS projects, with focus on developers of internet surveillance and censorship circumvention tools (free and open internet tools), the kind that OpenITP particularly works on."
She's tsabi on IRC in case you want to ask her more.