Hello, I'm going to run a non-profit blog for local community, which will highlight interesting cultural events, here in Czech Republic. The issue is that contributors will write in their native language, so it will be a blog where people write in English, Czech, Russian, German... Please, share you ideas about how to do this better from SEO viewpoint. Now I have in mind wordpress blog engine, where posts will be filled under different categories and tags according to their language and topic. And other minor issue - if I would like to run google ads on this blog, will it work correctly? If one post is in German and other is in English? Any ideas and experience sharing are welcome!