But Huddle for LinkedIn has pretty robust sharing capabilities. You can invite contacts to your Huddle workspace and have them upload files. You can also create discussions in the application as well.

As we noted in our first LinkedIn review regarding box.net - another file sharing application - we'd remind you to be careful what company files you share.

SlideShare

The SlideShare App for LinkedIn does something rather fun: it makes those presentations not only available for your connections to view, but it opens them up to discussions and comments.

We think this could be especially helpful before you give a presentation in person to a group. You could share a presentation with your connections and allow them to give you feedback via the comments section. For now, this makes it slightly more robust than the Presentations app for LinkedIn that we reviewed in part one, which lacks such a feature.