I don't like having Chrome notify me every time something happens; I'd much rather look at the top-right icon every so often and check if it has a number on it. Plus, when the notification expires, I can't fetch it back since it disappeared. However, it certainly could be another feature for other things, or be enabled at will as well.
Great work! I have only one thing to remind: please, please, let the users reply to the shouts themselves and not have them run around and bounce back to other people's pages everytime just to reply, and leave a trail of nonsensical comments!
I would very much like the option to select between filtered and all-time, too. A general switch - or different pages - with each the settings would be an elegant solution imho!
This would be amazing.
Customer support service by UserEcho
Either this, or rename 'favorite' to 'like' and leave promote as it is, could be a nice solution.