Users would like to be able to share content with other users within the site (not on Facebook or any other social media).
For example, if I read a blog that I like and think my colleague would be interested I could click 'SHARE' and send it to another user's profile or work e-mail address. Or tag someone? This would require a notification to the user that they have shared or tagged in something.
It would be great to be able to do this with blog posts, files, photos, and videos. "