HURRY. This is reportedly being blocked from the game soon. Requesting energy through the game now requires you to send Facebook requests to specific people. Many players prefer the old way. Use this tool to post energy request links on your wall for anyone to fill, much the way you used to. Bookmark this page! Share This Tool If you don't know your id, click HERE.
This should bring up a wall share that looks like this. You can then choose to post it to your wall or a group, and decide to customize exactly who can (or cannot) see the post.
NOTE: When you request energy this way, you can find and accept it by going to this link: http://apps.facebook.com/mobwars/mob/accept_boost.php?from=mob