Drupal front page and facebook crawlers I've got a drupal front_page that reditects all anonymous users from blogs to front page. But I want to facebook clawler see my og: data, to post comments with current title. Facebook crawler got 302 on front and takes title from front page.

How can I do a (maybe) whitelist to facebook crawler to take og: data from restricted area?
It depends on way how you made the redirection. Rules? Then add condition that tests user-agent and identify if it is not FB crawler. If you don't like PHP snippets you can do it by check Context which tests user-agent.