Quote from Cool Matty:
Again, you're saying "can" when I'm saying "it'll look like crap".
That's where I disagree. Well, partly anyway, depending on what you mean. I disagree on that desktop sites on a 10 inch tablets looks like garbage, because it does not. If you lower the size (eg 7 inch), then yes, it will look too small.
Anyway, meh, I don't think we have so different viewports. We might just slightly disagree on some small details.
I will agree that a phone app/webpage for a tablet MIGHT look out of place (it certainly does on 10 inch), a desktop site MIGHT look out of place on tablet, but then again, maybe not. A 10 inch screen is enough for more desktop sites because they just aren't designed to take advantage of the full width of computer monitors these days.
I will concur that there should be at least 3 different categories with approximate sizes as:
7 inch-
7 inch - 15 inch
15 inch+
Of course, the more categories, the better experience, but then again, that makes for more work.