There are many reasons why you would want to build a forum. You might be interested in a certain subject and want to share your knowledge with others and learn from them. Another reason for building a forum is to provide support to your clients.
Creating a multilingual forum is definitely a plus, especially if you are running a support forum. As it will allow you to provide support for your clients in their native language. As a result, more potential clients from all over the globe will be interested in buying your product or service.
We built our support forum using bbPress and WPML. Want to know how we did it and build your own multilingual forum? Check our detailed tutorial on how to use bbPress on multilingual sites with WPML.