Show "Go to App" popup directly from news feed - facebook-graph-api

I've seen this behavior only for Yahoo! News "social reader".
I see in my Facebook news feed " read on Yahoo!"
I click on the and a popup is shown to install the Yahoo! app (not a redirect to a new page, the popup is above my news feed)
I click on "Go to App" and I'm taken on yahoo.com/.../article
Is this documented somewhere?
Thanks

This functionality called Authenticated Referrals and described on Auth Dialog documentation (Enhanced Auth Dialog should be enabled in application settings)

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How to set welcome message for messanger chat bot build using AWS Lex

I built a chat bot for my project using AWS Lex and then I integrated it with Facebook Messenger. After integrating with Facebook Messenger my chatbot interface looked like this.
In the image you can see when some open the messenger he will get suggestions like "Where are you located?" or "What are your hours?" etc. by default.
Expected output: I want instead of these default suggestions messenger should display customized message like "Hello welcome".
You can create a customized greeting from your Page that will appear in Facebook messages and in the Messenger app for iPhone, iPad and Android when someone begins a conversation with your Page for the first time. Your Page's greeting will appear before any messages are sent.
To create a Messenger greeting:
Click Settings at the top of your Page.
Click Messaging in the left column.
Next to Show a Messenger greeting, click to select On.
Click Change, edit the greeting, then click Save.

Customize like message on facebook activity log

How to customize the facebook like message that appears on the users activity log after he likes using the like button. I've seen this customization for Wordpress.com
Whenever someone likes the wordpress.com website the log appears like this
here there's the additional text "on Wordpress.com". The like symbol on left is also customized to wordpress image.
How to achieve this customization on facebook using open graph tags ??
Just add this to your html head
<meta content='Your website name' property='og:site_name'>
To get 'Your website name' to the end.
The icon is added by a dedicated FB Application ( http://developers.facebook.com ). Just create an app for your website and add the icon to the 'App Details' of your app. Also add the Facebook SDK to your website!

adding app to fanpage... fanpage not showing up on "Add Page Tab"

So I followed the directions on facebook to add my app (which is a tab) to my fanpage:
"Facebook Page administrators can add your app directly to their Page by navigating to the following URL: https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID&next=YOUR_URL, where YOUR_APP_ID and YOUR_URL can be found in your app settings."
And I got the the Add Page Tab page as described above but when I click on "choose facebook pages" drop-down, the fanpage I want to add the app to is not listed. I'm an admin on the fanpage... any idea of what is wrong?
Try using this form http://addtopage.muffinsdeluxe.com/
It will generate the correct link you need to add the app to your page.
Good luck :)

apprequests show count, but no app info in apps tab

I'm developing a FB app, and using the apprequests object via Javascript SDK to call the invite dialog to choose friends to invite to the app. The requests are going out fine, and I see the "App Requests" count in my test user's sidebar increment. However, when I go into "App Requests" there is no app to accept.
Has anyone else seen this behavior? I've searched everywhere and followed the documentation as far as I can tell.
Any ideas?
Thanks,
Adam

Facebook like button fails in QA environment

We've set up a test page on our QA site to do testing on both the Facebook "Like" button and the "Tweet this" button. To do this, we password protected the site (except for the page in question), opened up ports 80 and 443? (I think) and set up a public DNS that points to the page.
Here's the test page:
http://qa.asme.org/kb/news---articles/articles/bioengineering/the-artificial-pancreas-project
The button shows a count, but the link doesn't show up on the Facebook feed. What else do we need to do so that we can run a successful test on the button?
Read this article here. Put the appropriate tags in your page markup. The 'og:url' tag is what you're looking for.
Good luck!