The UI will be very visual so language shouldn't be a major issue. I am not sure if I will be able to customise the UI by region (for the prototype) to display different languages but it will allow you to post in your own language. 

What I am not so sure about at this stage is how well it will be able to recognise restaurants in your area. Part of the functionality is restaurant identification so that you can easily browse and post. There are two options available for populating the maps and search options initially; google and yelp. The extent to how well these work by country will only become clear when we are testing.

I'll keep you posted.