Yes, you can definitely take a screenshot of any screen and share it in numerous ways.

Just click Export on your current screen, then select a service to share the screenshot. You can choose from:

   Photo Album
   Facebook
   Twitter
   Flickr
   Dropbox
   Email

On the 3D screen, you can choose your favorite view and click 'Render' to generate a stunning image of your project including special effects like shadows.  Please note, once you've selected 'Render' it can take from one to several minutes to generate your image.

See an excerpt from a video tutorial about this issue:  http://youtu.be/jv9ch5rzWxM?t=5m34s