[TheFirstDragon]

as you play you will find that after certain enemies are defeated a small red/blue/gold icon with an S on it will appear right under your health bar, this tells you you have earned a medal, if you go to the Extras section (after choosing your save) you can unlock dioramas, bobbleheads for your ship and more, but every singl one needs at least 1 green medal. these are aquired after sending a freind voucher and getting a reply one, the freind in question MUST have metroid prime 3 save data for this to work, after the messages are received and accepted each person will receive 1 green medal, I'm not sure if there's a limit to the number of vouchers you can send to a single freind, but it does have a "sent vouchers" and "received vouchers" counter, so I'm assuming you can send/receive as many as you want.

and kiraevo, I added you to my freinds roster

I'll update the first post with this info and my wii code

EDIT

I have also found out that you don't start the game with freind vouchers, you gain them as you go along, after I had completed the whole main part of the game I had 17 vouchers. I noticed that if you do optional thing like save a GF trooper you get them, if you go through the whole game not doing anything for anyone else you'll not get a single one I'm thinking. the more vouchers you have the more you can send and thus get more green medals to unlock stuff

I also found out that in the extras section everything must be unlocked by playing the game through and collecting the medals, another thing, if you've never been to the planet then you won't be able to buy that music, and such, everything in the BONUS section needs at least 1 freind medal, not everyhting else does, most normal things (art galleries nd music and such) can be bought with red, blue, and gold medals.

another cool thing; once you beat the game, the game will automatically take a screenshot of your mission final score and paste it to the wii message board, so you can send the photo to your freinds