The iPod was not a me-too product. It was the first digital music player that took a more comprehensive approach to solving the problem around finding/getting music content from the "cloud" (back when "the cloud" was just simply called the interwebs) to your player. When the iPod first launched, many people did not initially look any deeper then the surface.
Perhaps once we look past the surface of Buzz, we'll see that it brings something to the table that has been missing in social status sites. Or, perhaps Buzz is Google's Zune.
- lower barrier to entry: many people don't consider they have enough interesting things to say to make it worth creating a twitter account. They would more easily buzz it, since it's there in their mail account.
IMHO, this is genius.