I agree it's not a Twitter killer. My sisters are in their early 30s and don't really have any idea what Twitter is for or why they would want to use it, but t

I agree it's not a Twitter killer. My sisters are in their early 30s and don't really have any idea what Twitter is for or why they would want to use it, but they blog and subscribe to blogs with Google Reader. Their use of RSS is not changed at all by PuSH. I don't like this notion that every piece of tech has to be a "killer", as if there is always exactly one winner. There's a lot of room for a lot of different solutions, for lots of different kinds of people that want different things from technology. Not everyone is a tech-obsessed geek like most of us. :) (I mean that in the nicest way possible)