Two Russian companies have started offering unusual service this year . One message can cost as little as $ 6 , or £4 , so it is a cost effective method . The other company offers the same service for free and has been doing so since last summer. But critics have pointed out it is unlikely to have mass market appeal .
Two Russian companies have started offering unusual service this year . One message can cost as little as $ 6 , or £4 , so it is a cost effective method . American fastfood chain posted an 'advert ' to its Russian page this month . But critics have pointed out it is unlikely to have mass market appeal .