Its addictive "check in" feature that rewards users who share their locations (at certain venues) with virtual badges bearing the titles "Superstar" and "Adventurer".
Indeed, a Martian watching Teddy Sheringham, Robbie Savage or Alan Shearer play at certain venues might well assume that the worst of the four-letter words was their surname.
Denver is now working to carve out exemptions that would allow certain venues in the city to permit patrons to get high together, but the new rules will only sanction the use of edibles and certain types of extracts, which can already be used discretely in most places.
Because they are internationally recognized for the quality of their work, Butler and Khalidi suffer no dearth of possible outlets for their views, and it is misleading to say that their freedom of expression is curtailed; it is only their access to certain venues that is blocked.
The veteran sociologist Elijah Anderson's latest book, "The Cosmopolitan Canopy: Race and Civility in Everyday Life" (Norton; $25.95), posits that there are certain venues in cities (Philadelphia is his example), such as public markets, where the races can come together temporarily without conflict.
It's important for us to be part of a mutual support system between certain venues around the world that can share the costs.
A spoken word artist who had been told at times that she was too aggressive for certain venues or made some people uncomfortable, Kaur wondered if her hundreds of thousands of followers would all stick around for what was coming next.
A lot of restaurants, bars, record and clothing shops post flyers advertising certain venues or one-off events but that's laborious and time consuming.
And it isn't hard to imagine a game that includes geofencing, where users are rewarded in-game for visiting certain venues in the real world.
That last part is obviously a bit of a shot at Foursquare's mayor deals — but it's important to note that Foursquare also has some deals for anyone who simply checks-in to certain venues too.
