**I like the simple ""connect.""**
I agree that ""exchange"" carries the wrong product connotations.
IMO ""engage"" is a couple levels above the starter ""connect"" and is subtly off-putting if you're not completely self-confident.
""collaborate"" is part of what we do there, but are we really collaborating with Affiliates?
We want our members to do more than ""think"" with our Higher Logic platform.