What does "Sync Google+ Notifications" do? I've recently upgraded to 2.3.7 and noticed a new setting under the Google accounts sync options. 


  Settings->Accounts &amp; sync->my google account


As well as sync contacts, GMail etc it now also has a checkbox for 


  Sync Google+ Notifications


Does anyone know what this setting does?
Obvious: It syncs Google+ notifications if you have a Google+ account.  For example, comments on one of your posts (depending on your notification settings).

Not as obvious: You need the Google+ app for it to work.