This is a great idea! Many Duolingo users were upset when you (the Duolingo staff) removed the Activity button. This solves that problem. You get to meet others in your city, learn your desired language with others, and help spread that language all over your city!
Thank you so much Duolingo staff and others who made it possible! Please continue to work on this program and not discard it. What are your thoughts on it, rapidly expanding Duolingo community? Thanks!