If I share the following URL, it works fine and posts to my wall;
http://www.facebook.com/sharer/sharer.php?s=100&p[url]=https://www.google.co.uk/intl/en/about&p[images][0]=&p[title]=Test%20Title&p[summary]=This%20is%20a%20test
But this URL doesn't work, it just refreshes the sharer.php page;
http://www.facebook.com/sharer/sharer.php?s=100&p[url]=https://www.facebook.com/Google&p[images][0]=&p[title]=Test%20Title&p[summary]=This%20is%20a%20test
Does anyone know why? Is it forbidden to share Facebook pages using the sharer?