So you'd like to get notified when someone shares a post containing a certain hashtag?
Feed+ is a sample app that allows you to create an RSS feed of public Google+ activites and quickly add it to your Google Reader account.
This app currently supports creating a feed from specific user or set of search results.
The text in bold above is important!
You can get an RSS feed from a set of search results!
So go ahead, install and run Feed+, create a feed for your hashtag and add it to your Feed Library in Feed+.
Checker Plus for Google Reader
Preview your unread items without opening Google Reader and get desktop notifications with lots of options!
That's what you need right now!
Install Checker Plus for Google Reader if you haven't done yet.
Open in Feed+ the Reader of the RSS feed you just created.
This opens Google Reader.
Now subscribe to your feed in Google Reader.
Right click on the Google Plus for Google Reader icon in your browser's top bar, and choose Options.
Here you can configure the notifications for your feed.
You can now enjoy the notifications of your hashtag feed ;)
Of course, this works with any search, not only with hashtags.
Earlier today, I had a conversation on this topic with +Christian Schlobach.
If you like, you can read it in the comments of his excellent post Some Resources and Extensions for Google Reader, v1.1 here: http://goo.gl/vaZtG
#hashtag #notifications #chromeextension #googlechromeextension #chrometip #googlechrometip #googleplustip #rss #googlereader #feedplus #checkerplusforgooglereader