I agree with you, Buzz is dissimilar to Fridge. My point is that Google is trying to copy Facebook on what Facebook does well, this is not a good strategy.

The point of The Fridge is that it is different to Facebook. That's the only way to succeed.

Google has many active Fridges in Groups, it just needs to make the management of Groups much more simple, as the Fridge does.

But, if The Fridge succeeds (I'm not sure about this), then it would be too late for Google, but this is only relevant to Google.