I think it would be great to have a notification module which would allow email notification upon addition of new content :
- new document is added
- new file is uploaded
- new link is added
... etc
On their profile, users could select :
- the frequency of alerts (daily, weekly maybe even monthly for low activity websites)
- section of the site they want to get alerted about (i.e children of a given folder)
- the nature of content they are interrested in : document, files, links... etc
Content editor could choose upon document creation wether or not a given item should be included in notifications or not, by ticking a checkbox.
The admin could select :
- a chunk to use as template to format the alert in html (much like NewsLetter works) : this would allow for different styling of digests for different section of the site.
- placeholders would include something like : [+name_of_resource+] , [+date_added+] , [+author+], [+link_to_item+]
If anyone has ideas to add, be my guest

!
And if anyone is interrested in developping this, it would be awesome