Can I leave the open graph url blank, but dynamically pass the url to the button and have it function properly?
The url is dyanamic and updated by ajax from user interactions on the page. So if I put a value in the og meta, it will be different than the actual page url (after user interactions).
or by using FBML - is there any issue updating the fb:like button dynamically like:
<script> var fb_ps_page = window.location.href; document.write('<fb:like href=" '+ fb_ps_page +'" send="false" layout="button_count" width="450" show_faces="false"></fb:like>'); </script>