Back in June, when Microsoft's Surface was announced, I wrote a Reuters MediaFile column arguing that it really wasn't a tablet at all. It was a hybrid at best, I said, really going after a piece of the the ultralight market. The target wasn't Apple's iPad — but its MacBook Air. An ARM-based version of the Surface has been out for about a month . It goes for $500 — same as an entry-level iPad. It's really more like $630 because you do want that cover/keyboard, and the cheaper "touch" one looks cheap compared to the "type" version, and it's only $10 less. While Apple shows people touching the iPad screen Surface's print and TV ads for all tout the cover and the kickstand — terrestrial, not mobile features. Five weeks after launch Surface hasn't made a dent in iPad sales. CEO Ballmer said earlier this month that sales were modest, and that was on purpose . But the big shoe drop was always going to be how much Microsoft