I got a tour of a swanky clubhouse in NYC's Tribeca, where members pay up to $8,000 a year to network with high-level execs. The space was beautiful — but it clearly wasn't the main perk people pay for

Chief is a new private network that focuses on mentorship for aspiring or current female executives. Membership can cost nearly $US8,000, and there's currently a 3,000-person wait list. More »