Kind of ignores the work Google did in releasing Plus, which shows a lot of lessons from Buzz and Wave have been learnt. In particular, being very clear it's a

Kind of ignores the work Google did in releasing Plus, which shows a lot of lessons from Buzz and Wave have been learnt. In particular, being very clear it's a "Field Test" (as they called it), inviting feedback on the site, and erring on the side of caution when it comes to privacy. (e.g. I think users were initially preventing from making something public that was shared to a limited audience...possibly overkill, but a good way to start things off). Whereas Wave was more or less designed as "Email is Now Dead, Get Over It" and introduced that way, Google have been very cautious and humble in their messaging around Plus.