Was made to do this reviw on the blog.
I searched mashable.com for articles and came across this article :
Windows 7 Launch Sales: 234% Better Than Vista
The NPD Group has some figures now from the Windows 7 launch, and are reporting that the new Microsoft operating system is selling well — or at least, much better
than Vista did at its launch. In the first few days of sales, Windows 7 units in the U.S. moved 234 percent faster than Vista did in its equivalent launch window.
Unfortunately, thanks to pre-sales discounts and general lack of promotional effort behind the Ultimate version, revenue growth wasn’t quite as impressive.
Looking strictly at dollar sales, Windows 7 is up 82% over than the equivalent time period for Vista.
The PC hardware sales picture wasn’t nearly as rosy, however.
Although total PC sales were up 49 percent in year-over-year sales and a full 95 percent over the previous week, the overall growth rate was not as high as during the
Vista launch window, which saw a 68% jump in year-over-year and 170% gain over the week prior to Vista’s launch. Vista had a slight advantage with its January
release however, which typically shows a larger PC sales footprint than the month of October.

I chose this article because i agree that windows 7 is selling much faster than windows vista. Being a windows vista user , I understand fully the problems faced with the current Operating system.
However , I have yet to try out the new windows 7 so it’s pretty hard for me to comment on the subject .