Google Buzz = Facebook Killer?

I posed that question to the CurrentMarketing team this week, and while there was no consensus on what the emergence of Google Buzz will mean for Facebook, I got some very interesting responses. One one end of the spectrum was this:
“Sorry, Google. There’s already an App for that. Facebook, twitter and Gmail all have their place, and I’m not sure they can effectively invade each other’s territory. A Swiss Army knife does a lot of things, but isn’t the best tool for everything.”
The other end: “I can see switching, since I already have a GMail account.”
One team member saw Google Buzz as the beginning of a slide into irrelevance for Facebook, in much the same way that Facebook’s arrival presaged the decline of MySpace. Whatever the reality eventually turns out to be, it’s clear that Google has thrown down the gauntlet. It’s Facebook’s turn to respond!