Kevin posted what he thought on his blog.
Changes/Feature Requests For Google Buzz – Kevin Rose
The big news here isn’t really the functionality of
PownceBuzz, but that Google is boldly integrating this directly into their Gmail product
And he listed up his requests. Google Buzz is definitely in a beta stage but they’ve launched to get opinions and I know they will learn from it. Try the current version and give your opinions through the web.