Here's your Facebook Apps fix for the day:
Grupl is a Digg-like application that lets you submit links to be voted on. Vote up the stories you enjoyed, and the most popular content rises to the top. You can leave comments for news links as well. Grupl will show when each link was submitted, how many votes each link has, as well as how many comments users have left. The stories you voted on will show on your Facebook profile, but not links you comment on or the top links from the community. Grupl does not have a service independent of its Facebook app.
myTV lets you search and preview YouTube videos directly from Facebook. Search by popularity, most views and highest rating. Videos you like can be added to your favorites list. This list will show up on your Facebook profile, where friends can watch videos and add them to their own favorites list from those shown on your profile. myTV also gives you the option of importing your favorites list from your own YouTube profile. There are still a good amount of bugs in this application, but could prove to be a very fun and useful application once all the kinks are worked out.