There's always something brewing in the PopTech community. From the world-changing people, projects and ideas in our network, a handful of this week's highlights follows.

• Patrick Meier (Social Mapping and Social Change Salon 2010, PopTech 2010), director of crisis mapping at Ushahidi, spent last week at the iLab in Liberia and reveals a list of completely wrong assumptions he'd made about technology use in emerging economies.

• “My work speaks to audiences that, demographically speaking, are the future of the county: the young and the racially diverse.” This week we featured activist Erica Williams (PopTech 2009) in our 6 questions with... series. 

• Thanks to Eli Pariser (PopTech 2010) and Sinan Aral (2010 Science Fellow) for kicking off our inaugural Lively Exchange. This week's live chat conversation focused on how personalization of the Internet impacts the information we consume online. Miss it? Here's the transcript.

• The Eyeo Festival for creative coders, designers and artists wrapped up this week and our own Andy Dayton shared highlights on the blog. Speakers included Zach Lieberman (PopTech 2009), Heather Knight (PopTech 2010), and Nicholas Felton (PopTech 2009).

• 2009 PopTech Fellow Nigel Waller launched Movirtu to provide virtual mobile phone services to people earning less than two dollars a day. This week Movirtu rolled out a Cloud Phone aimed at low-income users: the organization's first market is Madagascar with others following shortly.

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Image: Alex Barros