NOTE:Since the time of writing Facebook have changed their setup so that now you always need to provide a valid appId to FB.Init() before calling FB.ui() - so now you always need a registered application to publish to a wall and the rest of this post is out-of-date, Grrrrrr!

Q: Is there a way that my website can post to a users Facebook wall without having to register an application?

A: Yes there is, on way is to call FB.UI() from Javascript, it will pop up a window to ask the user if it is ok to post etc (a good thing), but otherwise you won't have to register a facebook application!

It is very hard to find information about how you website can post to the facebook wall without having to register a facebook app first, nearly all the articles out there start with - 1.) Register your application with facebook!

But what if you don't want any of that complication, all you want to do is post to a user's wall? Well here's a post on stackoverflow that explains one way to do it via Javascript:

http://stackoverflow.com/questions/2724977/using-facebook-graph-to-simpl...

See Item 3 with the big green tick - It works a charm....

Thank you Soufiane Hassou!

To import the Facebook javascript API you first need to add the following attribute to your web page's html tag:

xmlns:fb="http://www.facebook.com/2008/fbml"