[b]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calling FB.ui() - so now you always need a registered application to publish to a wall and the rest of this post is out-of-date, Grrrrrr!
[b]Q:[/b] Is there a way that my website can post to a users Facebook wall without having to register an application?
[b]A:[/b] Yes there is, on way is to call
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!
See Item 3 with the big green tick - It works a charm....
Thank you Soufiane Hassou!