No need to teach an old dog new tricks.
Empower developers to communicate in a familiar environment, like Stack Overflow and Quora, that they actually enjoy using.
Share code, collaborate, and repeat.
Share code, documentation and ideas, regardless of location and timezone. There's no need to reinvent the wheel everyday.
Give credit where credit is due.
Recognize and reward quality contributions from your developer community with leaderboards, reputation points, and badges.