Situation: Site built on OpenCart, which utilizes faceted navigation. Problem: Google Webmaster Tools' "URL Parameters" tool reports a huge number of URLs with parameters like "sort", "order", "limit", "search", and "page.
I would like to exclude them, but I'm worried about 2 things:
1.) Maybe there's a better way to handle this issue? Exclusion directives in robots.txt? Something else? I.e. fixing the problem on the site, before Google detects it in the first place.
2.) I don't want to accidentally exclude actual content.
So... anyone familiar with SEO and/or OpenCart, please give me a 2nd opinion on which of these parameters I should exclude, or change the settings for?