In this limited release viewer, we offer a 100% Opt-In way to share status updates, upload photos and check-in to locations in Second Life, to Facebook. Users access this feature via a new floater button found in "Me>>Toolbar Buttons..." called Facebook.
The new floater includes tabs to access the three features along with an "Account" tab to log in and/or connect SL to your Facebook account. You can access the Help page for this floater. For more information on the feature itself, read the Knowledge Base article.
Until this feature reaches the default Release viewer, users must be running this viewer for this feature to be used.