With regard to the structure of a multi language wordpress site, I read articles discussing the pros and cons of a subdomain based WPMU(wordpress multisite) or a subdirectory based WPMU or WMPL plugin etc?
What about using Custom Post Types? I can use one site and segregate each language into a particular Custom Post Type.
Is there any drawback with regard to google SEO or anyother thing I don't know yet?
For example, I noticed CPTs don't have their own category taxonomy or are not supposed to have that. Does that work well with google "localization"? (since it might seem that the different languages are mingled together and served from one site)