O'Neill It's not quite Craigslist, but GregsListDC.com has developed a niche following among discerning Washington, D.C., residents and visitors as a good source of what's going on around town. The 4-year-old site draws thousands of unique visitors daily, says founder Greg O'Neill, whose day job is director of the National Academy on an Aging Society, the nonpartisan policy institute of the $6 million-revenue Gerontological Society of America. His site has roots in the early 2000s as an email newsletter among a growing group of friends. "I think of it as a social concierge," O'Neill told CEO Update. "Hyperlocal event sites are really popular with tourists," O'Neill… Read More