I don't really understand why there's so much criticism of the move really.
For me, with a brand like Ebay or Microsoft and so on, everyone recognises it so to have a larger shift away to something newer doesn't make much sense to me - why cause confusion when you're already known worldwide? Looking at the old Ebay logo, it looks messy, archaic and doesn't seem appropriate to a corporation of their size these days, but you don't want to change away from it too much. With that in mind, I think the new logo is the natural progression. It's hardly pulling up any trees, but it doesn't have to because it retains the familiarity of the older, recognisable logo with modernity too.
I also can't understand why people are commenting on the colour scheme and so on as a rip off of those others, it's just the same as what they've always used!