According to my observations, it appears that pages with queries like "?pg=x" are generating of "Duplicate Content" for Google's bots.
Please, verifiate and, depending of your results, may be it will be useful to introduice a new tag (i.e. <txp:canonical />) in order to generate the canonical metas (which could prevent that annoying behavior and restricts to the parent pages). Consider all needed attributes eventually.
According to my observations, it appears that pages with queries like "?pg=x" are generating of "Duplicate Content" for Google's bots.
Please, verifiate and, depending of your results, may be it will be useful to introduice a new tag (i.e.
<txp:canonical />) in order to generate the canonical metas (which could prevent that annoying behavior and restricts to the parent pages). Consider all needed attributes eventually.