Between the three, Facebook is literally everyone I've ever shaken hands with at a conference or kissed on the cheek at Easter. Twitter seems to be everyone I am entertained by or I wish to meet some day. Foursquare seems to be everyone I run into on a regular basis. All three of those social graphs are powerful in their own.

The quote by Dennis Crowley explores the distinctive roles of different social media platforms in shaping human connections. Crowley highlights that Facebook represents personal and historical relationships—“literally everyone I've ever shaken hands with at a conference or kissed on the cheek at Easter”—emphasizing the platform’s role in maintaining both casual and intimate social ties. This underscores Facebook’s function as a network of established, personal relationships.

In contrast, Crowley describes Twitter as a platform for broader social interaction, where users engage with those they find entertaining or aspire to meet. Twitter’s focus is on information, influence, and inspiration, connecting people who may not have a personal history but share interests, ideas, or admiration. It illustrates how social networks can extend beyond direct personal contact to foster aspirational or professional connections.

Crowley also mentions Foursquare, which captures more everyday interactions with people encountered regularly in physical spaces. This emphasizes the spatial and routine aspect of social networks, highlighting how some platforms organize social graphs around daily patterns and real-world presence rather than virtual or aspirational connections. Each network, he notes, is powerful in its own way, reflecting different facets of social life.

The origin of this statement comes from Crowley’s experience as the co-founder of Foursquare and a pioneer in location-based social networking. His reflections illustrate a deep understanding of how technology mediates social relationships, distinguishing the unique contributions of each platform. The quote emphasizes that social graphs—the patterns of human connection captured by different platforms—serve varied purposes, from personal history to aspiration to everyday engagement.