hi mizunori
yup, thanks for asking
Facebook
Now Facebook addicts can simply connect to Zerotohundred.com through the Facebook Connect button. This will automatically register them on Zerotohundred.com without having to create a new account here.
Existing Zerotohundred.com users can also link their Facebook accounts by logging out and then connecting through Facebook Connect (the top right login Facebook Connect button)
Having integrated the Facebook Connect application on Zerotohundred.com users can also post and read thread or new post feed through Facebook, so you'll always be updated on Facebook.
As for Privacy issues, i can assure everyone that there's nothing to worry since Facebook will never share such information.
Tweeter
As for the floating Tweeter thing on the left, We're still waiting testing it's function. This will allow Tweet discussions for Tweeter users live on Zerotohundred.com
I can't really say much since i'm also waiting to try it out :)