Google +1 not recognizing rel-canonical

[kevin4803]

So I have a few pages with the same content just with a different URL.

http://nadelectronics.com/products/made-for-ipod/VISO-1-iPod-Music-System

http://nadelectronics.com/products/speakers/VISO-1-iPod-Music-System

http://nadelectronics.com/products/digital-music/VISO-1-iPod-Music-System

All pages  rel-canonical to:
http://nadelectronics.com/products/made-for-ipod/VISO-1-iPod-Music-System

My question is... why can't google + (or facebook and twitter for that matter)  consolidate all these pages +1. So if the first two had 5 +1 and the rel-canonical page had 5 +1's. It would be nice for all pages to display 15 +1's not 5 on each.

It's my understanding that Google +1 will gives the juice to the correct page. So why not display all the +1's at the same time.

Hope that makes sense.

[RyanKent]

For facebook, if you use the proper open graph meta data your Likes will be consolidated.

With respect to Google +1, I can share my viewpoint and best guess. You are presently choosing to canonicalize these pages, but they are in fact separate web pages. You can choose to remove the canonical tag at any time so the data needs to be tracked separately.