So both poll answers indicate a like for Folders... Read them again and see.
I could not, therefor, vote.
I don't think I'll be using the Folders. I like the tiles as is, On Android I used Folders and, quite frankly, needed them. They allowed things to be bundled by type and allowed everything to fit on one screen without obscuring the background too much. I want everything I use (or think I'd use) on a regular basis to be "close to the surface" and "immediately available." Two taps is good. One tap is better. Mind reading would be the best, LOL.
On Windows Phone I don't need to bundle. I group tiles together geographically in areas of similarity. I don't need multiple screens to fit everything in. The Start Screen is one infinitely scrolling screen that I never leave. Despite having 72 tiles on my screen (I just counted) it takes about the same amount of time to scroll to what I need as to tap a folder and identify which occupant I need. I know where things are and can always halt a quick scroll in the right neighborhood. Everything I think I want or need is immediately available and ready to tap and that makes me happy.
I think Folders is, in part, just to answer those critics from other OSs that, "Nyanyahnyahnyahnya, we got folders and you don't." Not a reason to use them, IMHO, just because they are necessary on another OS.
Aesthetically, I don't like the Folders as they start to force a uniformity of look onto the screen. "We are the Borg. Resistance is futile." I work to keep my tiles layout non-symmetrical. I mix the 3 sizes. Some are live, some are not. Some transparent, others solid. Scrolling through the screen gives me a fresh look from every "neighborhood." They all have their unique charm, but like a city; each neighborhood contributes to the whole and affect the overall character. And when it comes to Live Tiles I want them each proudly showing their stuff. Those winks of info are a huge part of what makes Windows Phone attractive to me, and more useful than another mobile OS.
And rather than obscuring the background, more tiles sets it free. My background soars behind a rapidly scrolling screen and enlivens me every time I behold it.
Just my two cents.
Continue on, Folder People, as will I.
Peace and groovyness of Windows Phone be upon you all...