Is it allowed to have a gameboy advance/ gameboy games forum
in this forum you can download gameboy advance/gameboy games
the download link is like this : http://gameboyadvance.(...).com(a free web hosting, not this address its only an example)
the link to the download is in that above
example if i have pokemon emerald game and the link should be like this http://gameboyadvance.(...).com/pokemon/emerald/

can i?

sorry for my bad english.

I don't really understand:

You are allowed a forum about Gameboys
However how could you "download" gameboy games?

A little confused

well i give you some example of gba(gameboy advance) rom site that you can download a gba game.
http://free.gameboy.roms.googlepages.com

if you want a emulator here it is: http://vba.ngemu.com/

I don't think so... game boy roms count as emulated material which in term is like virtual images of games which means they are illegal.

Although if the game roms are free and have no licence then yes they can be hosted on a forumotion site