Blogger invited me to and I did for about 12 hours until I reverted to the old interface because it is much easier to for me to read.
Audible also just changed its interface for My Library and I don't like it for the same reasons. I can't read it easily. The print is too big and does not put enough information in my field of vision. It doesn't contain all the information that I want at my finger tips. It has too many icons and not enough text-- and a lot of time wasted flying over icons to see what they mean.
Webpage designers have no idea what older users need or what challenges they face.
New does not always mean better and pretty to look at does not always mean useful or easy to use.