I love the idea of this - it firmly puts people first and encourages understanding thru every view. The tag clouds are awesome as are the structure views etc. Well worth a look. Heres what they say:
What intranets always dreamed of…™
The People Engagement® platform
Turnkey intranet software that enables employees,
amplifies culture and fosters teamwork.
Check out the vid: http://www.jostle.me/product/jostle-org-platform/