Hi I've been investigating Facebook apps and whether it's something worth setting up.

Basically I have a business and want to sell products or subscriptions.

Is a Facebook app much use fo this?

I've seen a few examples of sites just iframed as Facebook apps with the inclusion of a timeline in there site and I think what is the point?

I see Facebook apps as being good for games or competitions I guess but what are advantages for a business setting up a Facebook app over a Facebook page?....or even just having a website?

Thank you for any advice or thoughts on this.