google needs to give everyone two accounts, that can be viewed in a single window. mixing private and professional (anonymous chat and shopping with your real name) is a bad idea. you can configure chat and buzz so it doesn't allow strangers to view your stuff, but i think it's only a matter of time until you make a hasty configuration error .. not everyone can fill his brain up with all the details about how all the google sub-accounts (shared items from reader, picasa) are linked and where and how and who gets to see what ....
It seems less fluffy than Facebook, which is nice, but the problem is that I don't have contacts for my Gmail account. I rarely ever need to send someone an old fashioned email. All of my contacts are on Facebook, so how do I convince 130 people to use Buzz instead? I don't.
"When a resolute young fellow steps up the great bully, the world, and takes him boldly by the beard, he is often surprised to find that it comes off in his hand, and that it was only tied on to scare away the timid adventurers." - Ralph Waldo Emerson
Right now, Twitter basically has a monopoly on micro-blogging. Google Buzz sounds interesting, and at this point, I'd support any micro-blogging platform that isn't called Twitter. Google's advantage is they have Gmail and their search engine, two things most Twitter users are using. So if they do this right, they can steal a good amount of market share.
I'm kinda thinking about ways to monetize Google Buzz too.
This is one of those things that's gonna be pretty hit or miss. I have a gmail account but I really don't intend to use Buzz. I think it's gonna be tough for it to catch because it doesn't have all the other social facets that facebook has (wall, PM, photos etc).