To limit the posts on your Facebook feed to only those associated with that particular event, you need to add the Facebook AppID in your event setup.
- Go to Communities > Special Events > Friends Asking Friends > Kintera Thon
- Hover over the name of your event and select Website Info
- Click on the Website Features link
- Scroll down to the Event Social Media section and add your Facebook AppID*
*A Facebook AppID can be created for your event by going to the Facebook Developer site.
For more information, please read How to configure the Facebook section of an FAF event with FAF Essentials