[PROBLEM] Meta Tags For Facebook

Hello everyone,

Fishing more 1 simple work and theres this last problem which is annoying me, the facebook tags:

The tags responsible for the tittle, description and image when you share the website on the facebook.

I´ve always used them, the actual ones are:

<!-- Facebook Meta –>
<meta property=“og:title” content=“GRÃO ESPREESO — CONCURSO CULTURAL CAPPUCCINO MAIS QUE ESPECIAL” />
<meta property=“og:type” content=“Hotsite” />
<meta property=“og:image” content=“http://www.graoespresso.com.br/mais/img/facebook_img.jpg” />
<meta property=“og:description” content=“Participe! Envie sua receita de cappuccino e concorra a um Ipad Wi+fi 4G e a iPods.” />
<meta property=“og:site_name” content=“GRÃO ESPREESO — CONCURSO CULTURAL CAPPUCCINO MAIS QUE ESPECIAL” />

They are not working and i really have no idea why, the site: http://graoespresso.com.br/mais/index.php

The index php page has only 1 php code for the footer html, nothing else.

Someone already had this problem? Could give me a hand?

Thank you.

@Fixed

There was an error on my <!DOCTYPE HTML> tag, i addded the xmlns:fb=“http://ogp.me/ns/fb#” for the like button there, and its wrong, you have to add on <html> tag, dumb mistake…

As a TIP i used https://developers.facebook.com/tools/debug it helped finding the error…

Thanks anyway…