I was recently invited to participate in some early testing of Google's Wave product. As readers know, Wave has been described as a "SharePoint killer." My initial impression of Wave leads me to believe it's little more than hype. Adriaan seems to agree. However, I was amused by what I saw when I first visited the site.
It seems that Google has taken a page from Microsoft's playbook in trying to "encourage" usage of Chrome, Firefox and Safari, while making use of IE challenging without "plug-ins." Perhaps Google's goal is to be more like Microsoft, not supplant them in the collaboration space.