The source is a podcast episode from "The SDM Show" where host Rob Cairns interviews Cami MacNamara about her experiences at WordCamp US, a conference for the WordPress community. They discuss various aspects of the event, including the city of Portland, the value of networking over attending every presentation, and specific talks and afterparties. The conversation also touches on the accessibility of the venue, suggestions for improving future WordCamps, and the importance of community and mentorship within the WordPress ecosystem. The episode concludes with MacNamara sharing information about her own venture, "Web Designer Habits," and expressing appreciation for the friendships forged through such events.