Ms. Hussaini oversaw a handful of bloggers who gathered information about the mounting protests in Tunisia for Global Voices, a volunteer-driven organization and platform that works with bloggers all over the world to translate, aggregate and link to online content. As part of its reporting, she said, the site turned to Facebook, YouTube and Twitter, where other bloggers and hundreds of ordinary people stepped into the role of citizen journalists and shared their experiences, cellphone photos and videos online.