Hi Sabrina Deitch,
Yes, that would require "Push Notification" concept!! This will be somewhat similar to like we have trending content in facebook !!You can do it by making an app or a plugin !! That will require ajax and jquery and ofcourse node.js!
Which will get the feeds and will push the content on page! Just like linkedin does!
While there is not an option to selectively disable a notification from being sent out when you create an event, if this is a feature you are interested in seeing I would recommend submitting an idea to the Ideas for Jive space where our Product Managers review through top rated ideas when considering features for future releases.