Just invited to littlemonsters.com. Decided I'd sign up via Facebook Connect (since most people will)
Interesting things:
* popup affordances on the home page guide you to features
* Facebook connect used but only to bootstrap your account.
* Sets up an email forwarding address for you that uses your Facebook primary email.
* Has a link to mail.google.com on your profile to read your email (and a gmail logo)
* No public profiles (as of yet..)
* System posts supported (my profile creation has already gotten one "Like")
* Has +1 buttons!
* Very pinterest style for posts -- big page full of posts. None of this single-column vertical scroll.
* has up and down votes.
* "Fan" instead of following.
* Friend finder not there.
* Sorted list of "New" users.
* Chat rooms.
* "t" button for notifications.
* and holy smokes! -- actually they're provisioning a new mailbox for each user on the GA+ domain littlemonsters.com.
plenty more, happy to demo.