Tango Mango is a free community calendar for Argentine tango dancers to find information about milongas, classes, and related events. Because this is a community site, anyone can post events, and all updates are published instantly!
I launched Tango Mango in January 2006 for the San Francisco Bay Area, and since then it has spread to Southern California, Florida, and Chicago, thanks to brave volunteers. If you'd like to see Tango Mango in your city, all you need to do is start posting events. Be sure to include the event hosts' email where it asks, so they will receive automated reminders twice a month to keep their listings updated. That's critical, so they'll take care of it themselves instead of relying on you to do everything for them. Also link to Tango Mango from your own website, and be sure to actively tell people about Tango Mango. It can take a couple months, so be persistent, but once you get critical mass it becomes very easy. And contact me if you'd like a link to your area on the home page.
About me: I'm a social dancer in the San Francisco Bay Area. I built this for fun and run it for free as a donation to the tango community.