You can use this module - http://drupal.org/project/service_links
to get the sharing icons on nodes.
About exposing them to views, I dont think so they do it, but you can give it a shot. :)

On Wed, Jun 6, 2012 at 8:31 PM, amandil 001 <amandil001@gmail.com> wrote:
Hi, there's any module for D7 that shows social buttons on contents
and exposes the social sharing to views in order to use them as filter
or sort criteria?

Thanks,
Amandil
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Regards,
Vaibhav Jain