Associations
From now on you no longer need to retype all the news you pass through to your association members. You can include the RSS feeds of interesting sites and enable your members to add news items. Your members can even vote what news they find interesting, so that only the more popular items reach your website's front page.
You can create different user groups for your website and give selective access to them to specific pages. You can also let your members update their profiles on your website. With a publishing workflow you can make sure that nothing gets posted on your site without being reviewed.
Use your site to manage the events you are organising: send your email invitations from the site and let attendees manage their subscriptions online. You can also integrate your event calendar with other online services through ical, a web standard for calendar applications.