Top Friend codes Sites

Recently I've been trying to find out which Friend code exhanging sites are the most popular.

I'm still pretty cluless so I'm asking you DS'ers

What are the most popular Friend codes sites?

The sites can be game specific or non-game specific, official or non-official.

I want to narrow it down to 20 of the Top Friend Code sites.

umm, hmmm, thats a tough one... oh oh I know how about that site called GAMESPOT!

Uh, how about: http://friendcodes.com/Matdredalia

i heard nintendo is trying to make that site close

3480 1980 5558 name ASH pokemon diamond