Since Tiki 16 Tiki integrate default parameters that are used by Facebook when fetching a page if they are missing or if you prefer to use your own for the entiere Tiki.
Note: It is possible to have your post (forum, blog, article, etc) posted to Twitter using an external social media automation solution. Those external services are very popular and use Tiki RSS feed to fetch and publish content on your behalf.
Consumer Key and Consumer Secret are used for integrate your Tiki and Facebook using a Facebook application.
On the Developer page click on Set Up New Application and enter a name for your Application, sell your soul (agree to the terms) and click on Create Application. After a successful captcha check, you can proceed with step 1.
You may need to login in Facebook to accept the validation process in Facebook (to allow the developer application use your account details in Facebook, etc).
The name of your application is already set, so you don't need to enter a new one. Feel free to upload a logo and icon for your app. As I give support via e-Mail, I entered my email address for the users support.
Enter the site URL and the Site Domain. My test server is at test.ott-consult.de and tiki is at the URL for my test server is at http://test.ott-consult.de/trunk. The Site URL therefore is http://test.ott-consult.de/trunk/tiki-socialnetworks.php?request_facebook.
On this last step, you can give the Facebook Deauthorize Callback which will be called, when a user disallows your application on Facebook. Don't choose sandbox mode here.
Usually, your web server has a static IP address. By putting it on the server whitelist, you can add a bit of security, as only requests from that IP will be processed. If you run a server farm with multiple servers, add all IP addresses.
Users need the tiki_p_social_network permission in order to use social networks. To login via facebook, the Anonymous group will need this permission.
Before being able to use the Facebook integration, users must authorize the TikiWiki site by requesting an oauth token. This can be done via the Social networks tab on My Tiki.