Script Summary: Provides a visual indication of new posts in selected Flickr Discussion groups, Flickr Discussion threads, Flickr Photo pages, ..
Version: 4.2.3
Chrome users: please install this script as a Chrome extension

or you could buy me something from my wishlists:
books (Amazon US) - books & photog gear (Amazon UK)
The New Flickr Post Notification notifies when unread posts are available in your favorite groups, or selected photo pages, new members in a group, new photos in a photostream, ...
Available for Firefox, and Google Chrome (and probably other WebKit based browsers, like Safari), and Opera (v10.53 and up).

Rationale
To follow up on discussions, one can use the RSS feed for the group. This works very well.
Unless it is a private group: no RSS feed is available for private groups. And there are no RSS feeds for individual threads
This script is not limited to private groups, though.
With this script you can define a watch on
. discussion pages (notifies of new posts)
. discussion threads (notifies of new posts)
. photo pages (notifies of new comments)
. photostreams (notifies of new photos)
. group members (notifies of new members)
. group pools (notifies of new photos)
. group pool 'pending items' (notifies of new photos)
. reversed contacts (notifies when someone adds you as a contact)
. help forums (notifies of new posts)
. help forum topics (notifies of new posts)
. flickr app pages (notifies of new comments)
. set pages (notifies of new comments)
. testimonials (notifies of new ones)
And as a nice side-effect, it has reduced my number of Flickr tabs considerably!
Notification
On almost any Flickr page, you will be notified if a new item is available in any of the selected pages.
You can click any of the envelopes to go to the selected group, topic, or photo. Hovering the mouse over an envelope will show the group's name, or the topic's title, or the photo's title and owner, as a popup title.
On the Discuss page of a selected group, the replies column of threads with new posts (or new threads) are highlighted and show the number of new posts in that thread.
For more details, user feedback, bug notifications, new version announcements, ... visit FlickrHacks.
Get update notifications via twitter.



