I am developer of www.iloveskola.lv
and I have created facebook login with API.
After user logs in with his facebook account he has opportunity to participate in voting game.
One question, 4 answers. Each answer is facebook LIKE button.
When user press like button, LIKE content on facebook has been created automatically. First 2-3 days its was working perfect, but now when user press button iframe content just blinks and nothing.
I checked this with mozilla(bug zilla) and saw following response:
for (;;);{"__ar":1,"payload":{"success":false,"show_error":true,"error_info":{"brief":"Invalid url","full":"URL could not be liked because it's been blocked.","errorUri":"\/connect\/connect_to_node_error.php?title=Invalid+url&body=URL+could+not+be+liked+because+it\u002527s+been+blocked.&hash=AQAh-oNvuhmlqYzH"}}}
For deep investigation you can try this system by yourself. If our site is blocked want to hear explanation why this is happening.