In Berlin we have a small startup based on this idea. You can subscribe to our newsletter and we send you the daily menu of the restaurants in your area every day. With forwarding this e-mail to your colleagues, all of you can select the favourites using the up-vote buttons in the email. You can track the votes on the website, but you will receive a summary about the results as well. Give a try if you in Berlin: https://www.halb1.de/
