I think a little cross over is healthy, as long as there is english as well. If we want to embrace the fact that domains, especially .com are World Wide.
If we are too militant here, we lose the chance of people whose first language is not english being made to feel uncomfortable and then each of us straying behind our respective walled gardens i.e. English domainers here at namepros.com and Chinese domaniners at sites like 4.cn etc Note that 4.cn and some other chinese sites have English language option button now to encourage western domainers to their site. We should be a little accommodating too. After all we should encourage whole World domainer interaction and new high buying power countries coming onsite to namepros. That is if namepros does still want to be known as the Worlds biggest domainer community.
It can only help all of us. After all, look at the quality of the domains it brings to namepros. i.e. 38.com ..wow! geez, c'mon!!