Virtual economies attract real-world tax attention - Yahoo! News

Virtual economies attract real-world tax attention - Yahoo! News: "'You could argue that to a certain degree the law has fallen (behind) because you can have a virtual asset and virtual capital gains, but there's no mechanism by which you're taxed on this stuff,' he told Reuters in a telephone interview."

Uhh, that's because it is 'virutal', I.E. 'not real' aka 'monopoly money' or at least, that is what it started out being ;)