How many digits are 3DS friend codes?3DS friend codes are 12 digits long. For example: xxxx-xxxx-xxxx
Do I just need one friend code?Nintendo says that the code assigned to your Nintendo 3DS system will work across software meaning you won’t need to register friends for each individual piece of software. This can however vary from software to software so some publishers may choose to create software specific friend codes for their games.
How can friend codes be exchanged?Codes can be exchanged locally or via the internet. A Local Search will seek out nearby systems and talk you through a process of adding that player to your Friends List.
Friends can be registered over the internet assuming you have an available connection. Simply tap in a code provided by another player and make sure they register your code as well.
How many friends can I register on one system?You can register up to 100 friends on your Nintendo 3DS
Can friends see when I am online and what I am playing?Your online card shows your name, your Mii character, your online status (or when you were last online), your favourite game (which you can set based on software that has been played on your 3DS system) and will show what game you are playing at that time. These can all be altered at the players discretion. You can also leave a status message.
How will I know if someone on my Friends List has come online?When a friend comes online, the notification LED in the upper right corner of the system’s base will flicker.
Can I access my friend list during gameplay?Yes. Press the Home button and tap the Friend’s List icon at the top of the screen to see who’s playing what. You do not need to quit whatever you are playing in order to access this.
Can I communicate with a Friend outside of gameplay?Not at the moment. There does not appear to be any method of contacting a friend via the Friends List. This should/could/may change with a future firmware update.
Most likely, I will post my friend code on Friday afternoon. I am in uni until 3, which is really annoying, and I have presentations to deliver.. sigh.. BUT I may not be tired after the midnight launch so could well post in the wee smalls on Friday morning.

This probably needs to be made sticky.
Make sure you include, with your code, the games you have!! You can easily use the 'edit' feature too to add future games you buy.
This post has been edited by mikes: Mar 23 2011, 09:54