coan.net: The official list of words for French Scrabble can be downloaded here : http://perso.orange.fr/ledefi/ODS4.TXT

I would think that the Scrabbles in different language should better be defined as different games, with different rating lists.

Of course playing only in English is feasible, but not very fair. My French vocabulary should be around 50000 words, while my English one is probably around 2000 words. I can probably still have some fun while playing in English, but considerably less. And if I play both in English and in French for the same rating list, I will screw the ratings.

By the way, competition French Scrabble is almost never played by the original rules, but almost always in the duplicated form : both players use the same letters on the same grid, and are aiming for the all-best score for the current turn, without any strategical consideration. Then either the best word of the two is placed on the grid, either the all-best word according to the computer. This variant is supposed to get rid of the big luck factor that "family Scrabble" (the name of the original game) has.

I suppose that duplicate Scrabble would be feasible on Brainking, using the no-computer rule for choosing the word to place, and having players search for their word in turn, without seeing the choice of the opponent.