Iphone – Facebook URL scheme to post a new message from iPhone

Assuming that you have a valid FBSession Object:

    FBStreamDialog* dialog = [[[FBStreamDialog alloc] init] autorelease]; 
    dialog.delegate = self; dialog.userMessagePrompt = @"Example prompt"; 
    dialog.attachment = @"{\"name\":\"Facebook Connect for iPhone\"," "\"href
    \":\"http://developers.facebook.com/connect.php?tab=iphone\"," "\"caption\":\"Caption
    \",\"description\":\"Description\"," "\"media\":[{\"type\":\"image\"," "\"src 
    \":\"http://img40.yfrog.com/img40/5914/iphoneconnectbtn.jpg\"," "\"href
    \":\"http://developers.facebook.com/connect.php?tab=iphone/\"}]," "\"properties     \":{\"another link\":{\"text\":\"Facebook home page\",\"href\":\"http://www.facebook.com\"}}}"; // replace this with a friend's UID // dialog.targetId = @"999999"; 
    [dialog show];

Source: Facebook Connect Reference

This technique is now deprecated.

This used to tell Google how to index the page.

https://developers.google.com/webmasters/ajax-crawling/

This technique has mostly been supplanted by the ability to use the JavaScript History API that was introduced alongside HTML5. For a URL like www.example.com/ajax.html#!key=value, Google will check the URL www.example.com/ajax.html?_escaped_fragment_=key=value to fetch a non-AJAX version of the contents.