Involver Facebook Page App Suite
I'm in the process of testing a number of them, and one suite that I really like is made by Involver. Why? Two reasons: They are easy to setup and install, and they work really well. (I'm sure you've come to realize that's not something that can be said for all Facebook apps.)
Involver allows the use of up to two apps for free, but where the rubber meets the road is with their premium product, which gives you access to the entire suite. Apps include RSS feed integration, Twitter feeds, file sharing, YouTube channel, photo gallery, coupons and more. I'd really like to see them develop something that pulls in Flickr photos as well. I'd also like to see a verson of the RSS feed app that allows for multiple feeds as the current version only makes room for one. (I use it to pull in my book blog feed.) At $50 per month, the cost is reasonable enough for small businesses to afford.
In creating my Page, I could not find a page category tailored for a book. (There was one for a writer, but not a book. Go figure.) Not that it's a big deal, as it mainly affects the Info section, but still, it's a tad aggravating.
I happened upon a friend's Page and noticed he had a tab called Extended Info. I explored its contents and found that it's created by an app that allows the user to go beyond the constraints of the default Info section by adding additional, configurable fields. In fact, you can incorporate HTML and FBML (the Facebook version of HTML).
I quickly incorporated it into my Page and am planning on even more extensive customization via the use of images. The app is not designed exclusively for use in Fan Pages, however, so you will need to look for a tab in the Extended Info admin panel that says "Facebook Pages." Click that and it will walk through the simple setup procedure.
Social RSS (formerly known as RSS-Connect)
One app I attempted to use that didn't work well was Social RSS. Like Extended Info, it is not designed exclusively for Facebook Pages. While I could get it to work in my personal profile, I could not achieve that same feat on my Page. Perhaps it was my ineptness, but after several attempts I gave up. The app offered great promise too, due to the fact I could incorporate any number of feeds.
Other Facebook Page Apps
Mashable has list of what it refers to as 8 essential apps for your Facebook Page. It mentions the Extended Info app as well as some created by Facebook itself, along with several that look promising. I'm going to be playing with them over the next few days on my Page. I'll let you know what I think.
There are many more such apps than the ones I've mentioned here. What's your favorite and why? Leave a comment with one you recommend.