Neighborhood listservs and neighborhood social networking websites have been described as helping to create social capital, or relationships between people in a neighborhood who use the platforms. Social capital creation has therefore been a key focus of what social networking platforms have to offer at a local level. But what if we were to shift the conversation and design objective away from creating social capital/building social networks towards creating/framing social interaction? What might we see in terms of benefits for supporting community building? To ask this questions I turn to the concept of social infrastructure.