You can control how big an area you want to see requests or offers from
You can select 10 km, 25 km, 50 km, or 100 km.
There's also a filter on the sidebar for what kind of posts you can look for
Categories include: baby supplies, food, information, transport, and volunteer work.
You can also control the privacy settings of your post
Like on your regular Facebook account, posts can be made "public," visible to "friends of friends" or just "friends."
There's also a panel dedicated to either finding or making a Facebook fundraiser