From KickApps Documentation
You can broadcast messages to your site's members in two ways. First, you can send a mass email to all site members (or members of specific groups). Second, you can insert feed items into your members’ "My Friends and My News" feed.
These new broadcast features can be accessed by clicking the "Broadcast a Message" link on the Affiliate Center home page. From there you can either broadcast via email, or via Activity Feed.
When broadcasting via Activity Feed, you can insert your HTML-enriched messages in the general Community Activity Feed or the Friends and News Activity Feed (which appears on each member’s MyHome page), or both!