Simple tip, ask members to share their own learning goals.
This works on two levels.
- It forces members to think carefully about what they want to learn.
- It allows you and others a drop-dead simple way to please a member.
I think you can take this one level higher.
Update member profiles to let them identify current shared learning goals and include an area where they can display what they have learned in the past. This might be books read, events attended, courses completed, or experience acquired.
Each progression acts as its own trigger to update the profile. This, in turn, encourages them to share the profile elsewhere. This, in turn, triggers more people to update their profile.
Try it. Add a field to member profiles with a current learning goal. Notify the community. Add another field for previous goals/experience gained. See what happens.