I always neglect this on my 3DS... anyway I hear registering friends can help in Bravely Default since they can be used as summons. This is just the kick up the backside I needed to remember to add everyone, so if you've added me before and I haven't added back, sorry! I'm adding everyone now!
If you're still looking for one, I can help you out mate. I've decided to wait for the New 3DS XL instead (hoping for some kind of Xenoblade special edition!). Gimme a shout via PM if you still want one and we'll sort it out.