@glynmthomas
Include a range of content – asking people to do something interspersed with reporting back, general updates, useful information etc
Facebook: 4161 / 503 / 12.09%
Twitter: 6378 / 28 / 0.44%
Email: 243 / 30 / 12.36%
(63 people clicked the share by email button, and 15 people chose to share by email. Those 15 people brought in 30 new people.)