Cafe life has taken hold in modern Russia. From Starbucks to local chains such as Kofe Khaus and Schokoladnitsia, there are lots of places to hang out, see and be seen.
It's a striking change in a country where, in Soviet times, the best an ordinary comrade could expect was a mug of tea in a workers canteen.
The world over, the basic contract between cafe and customer is this: You buy a drink or a snack, and you get to use the premises for as long as it takes to consume it.
But an entrepreneur in Russia is experimenting with ways to change that: At his cafes, money buys time.