Hi I'm experiencing a super weird problem. Whenever I post links to my website on Facebook, they come up as Forbidden. The site itself works great and I have no seen this when linking on other sites. Learn how to create a Facebook share link without using JavaScript, including tips and solutions for effective sharing. from my Android app, I would like to open a link to a Facebook profile in the official Facebook app (if the app is installed, of course). For iPhone, there exists the fb:// URL scheme, but trying the I have an email address and want to find out if there is a Facebook user linked to this address. If there is, then I want to retrieve the url to this users profile page and save it somewhere. I do. Facebook will not allow developers pre-fill messages. Developers may customize the story by providing OG meta tags, but it's up to the user to fill the message. This is only possible if you are posting on the user's behalf, which requires the user authorizing your application with the publish_actions permission. AND even then: In my Facebook account, where can I find these application IDs, secret key, all? How do I go about either making, or retrieving facebook short url's (fb.me) from a page, profile, event etc? I want to update my url shortener site - but if the user links to a facebook page I want. It is just the original Facebook URL and not a user or page address. But this regex can distinguish a normal url from a profile and page url and only accepts the valid one. Here 's the Facebook's official page with developer tools. There used to be an FQL console there, but it's no longer available. You can use the tools there to test other FB API though. Edit: For an actual FQL test console, you can take a look at this. It's not online like you wanted, but it's the next best thing that I could find when I went. Attach an image to the facebook.katana as an external app Request the log status of the user to the facebook.katana (i think this would be automatically) Attach the picture, title, message params to the facebook.katana. Publish as the app that opens the facebook.katana (i.e. publishin with the WebView will show published from X app .