For the past year, Laura Miller has been living a double life of sorts: administrative assistant by day, secret agent of kindness by night. The 32-year-old only recently revealed herself as the woman behind "Secret Agent L," a giver of random acts of...

"That's public space. Nobody can us it." That was one Portland city official's response when Mark Lakeman and his neighbors first began building unauthorized gathering places in their neighborhood in 1996. To Lakeman, an urban designer, this seemed like a...