Can pay with a like be converted to pay with a share?

I have recently started using the "Pay With A Like" plugin.. great idea! It works good on my site. After reading the following article I was wondering if a "Share" option could be made to work with this plugin? I'm wondering because according to this article...SEO rankings are better with "shares" than "likes".
http://www.knowmad.com/do-facebook-likes-increase-search-rankings/

Also... is it possible to add the use of ajax to allow access to the rest of the page instead of the page having to "refresh and reload"? This would be much quicker and more user friendly making for the end user a far better experience.

Thank you for your hard work.

Gary