FLiM Free is the Friend List Manager for Facebook. It lets you manage your friend lists directly from your phone.

Facebook lets you use friend lists to filter the News Feed or to post messages privately to only certain groups of friends. Unfortunately, the mobile Facebook app doesn't let you manage your friend lists. FLiM Free lets you create and delete lists, and easily add and remove people from them.

You can create lists for your favorite sports team, band, TV show or activity. You can then post messages to those lists, and only the friends you have added to those lists will see them. You can also filter your feed using lists so that you only see posts from friends the lists you select. If you have friends that you find annoying you can exclude them from your feed without un-friending them in Facebook.

Here are some examples of what you can do with lists:
- Post your party photos without your judgmental relatives finding out
- Have a fantasy football thread with just the other players
- Plan a surprise party without your SO finding out
- Post your beautiful snake's photos to your herpetology club list
- Filter out that crazy uncle that keeps posting about pocket lint
- etc.

Full instructions are included in the settings page.

NOTE: You have to use the Facebook app to actually post or see your newsfeed. This app is for managing the lists.