How is membership changing - research ideas (2)

Following on from my last post, it might also be interesting to look at how membership is changing by looking at membership data - so, membership numbers and who members are, length of membership etc. etc. Organisations will not want to share this data without clear benefits - so we could help them to benchmark themselves against other similar organisations. Certain analysis could be available only to participating organisations, whilst other analysis could be published more widely. We could use a pledgebank model to encourage enough organisations to sign up.