Facebook now includes the ability to insert all kinds of different applications made by developers all over the world into your own profile. The general applications (events, groups, marketplace, notes, photos, posted items) have included several  marketing benefits and abilities in themselves, however the newer applications provide endless strategies.

Here are just a few I find to be useful:

Facebook Video is probably by far the best to use for just about any business (bands too). Videos can really draw in your users and help them to remember your profile.

Facebook Graffiti has been taking off too. This popular app allows you to draw on friends’ profiles and will soon include a much larger array of uses including a public graffiti gallery. Commercial messages could get lots of attention here.

Flixter is a really popular movie app. People are always reading each others reviews, another high traffic spot where people are actually reading things.

Super Wall allows you to post messages, photos, and videos (youtube) on your wall. This is a great app for businesses, allowing them post interactive media on their profile home to draw users in from the start. Very popular app

If your business is non-profit, the Causes app could really benefit you. It allows users to join your “cause” and even donate money right off the Facebook website. It’s not closed to non-profit companies, so many bands and other businesses can swing this app well with a certain image.

My Questions is a great app for businesses who are looking to get poll-based feedback from their friends. The Quizzes app could also handle feedback very well.

Finally, check out the Slide Shows app made by RockYou for showing numerous pictures and getting users more involved with your profile.