SHARE
From MidrangeWiki
[SHARE http://share.org/] is like COMMON except more targeted at IBM mainframe users than AS/400 & iSeries. Founded in 1955, SHARE Inc. is an independent, volunteer run association.
user focused education & training
There are two major conferences a year with 700 hours of seminars, drawing 4,500 participants.
http://www.share.org/Member_Center/benefits.cfm