Hello guys i was wondering if there is a difference between the visitors that comment on my site, for example: 1st visitor enters my site from Google, leaves a comment. 2nd visitor enters my site from referer(social bookmarking site or other type), leaves a comment. 3th visitor enters my site directly(types the URL) and leaves a comment. So will any of those three comment be stronger than the others, assuming that they all are absolutely the same.
It will only help your post to indexed one more time. Once a comment is made, Google will index your updated comments..
all same, just some content for your site, unless you display referer as well, but likely you are not and will not.