Speaking of the Mac platform in an iPhone age (which neatly follows that there iPod era which, erm, did a lot for Apple’s ID) here comes the news that the platform which (allegedly) owns just 5 per cent of the PC market also owns half the cash slapped down on computer purchases across the old US of A.Don’t believe us? Well, we’re not the only ones saying it - NPD analyst, Stephen Baker (vice president of industry analysis) came up with this gem in a chat with journalist, Joe Wilcox, as bought to our attention by Dalrymple’s beard.So - some stats to back-up these claims:Apple’s US retail desktop revenue share for October was 47.71 percent, up from same time last year when it hit 33.44 percent.Sure, we know PC sales k