We're excited to update the location targeting in ethnio with city-level accuracy. Using the GeoIP targeting from the fine folks at MaxMind, you can now choose to only display your ethnio screener in one or more cities. This only applies to JavaScript implementations, and won't work with direct links, but if you're looking to do targeting with direct links, you can totally take out a FB with that kind of targeting, and then link back to your ethnio screener.