The fact that it only works in Gmail forces Google Buzz users to create a Gmail account. This is obviously free, but clearly a tactic to increase the popularity of Gmail, which has consistently forced away market share from Microsoft's Hotmail, Live and MSN email offerings.

The fact that Google has been able to integrate Twitter and Flickr into Google Buzz will make the product immediately appealing to large number of users.

Surely an aim of Google will be to expand this offering beyond the current social media websites, and in the future include the hugely popular Facebook as an integrated possibility. With Microsoft's share in Facebook, that will likely be a mammoth challenge for the newly-crowned kings of Silicon Valley.

Google Buzz is also accessible by mobile.

Google Buzz is a revolutionary product from a revolutionary company. In its very recent past, Google has announced numerous revolutionary products, including Google Wave, the Google Nexus One Phone and Google Chrome OS.