“A slide from Emerging Risk of Digital Currency presentation: ‘Worldwide use of bitcoin is growing, but there is not sufficient use and liquidity yet for massive adoption. Also, consumer interfaces to bitcoin are not sufficiently mature yet: ease of use, clarity of transactions, taxation issues, etc. And…many regulatory issues are yet to be adequately addressed.’ It is also explicitly stated in one of the slides that: ‘Western Union does not have commercial relationships with Digital Currency companies or providers who buy, sell or trade in digital currencies and will also prohibit consumers from using Western Union services if it is determined transactions are associated with E-Currency.'”
http://bitcoinmagazine.com/7692/western-union-says-bitcoin-not-ready-for-primetime/