Forum Moderators: goodroi
Robots.txt Validator [searchengineworld.com]
Pendanticist.
Of course, others are not and the whole issue is very murky.
Let me return to the robots.txt issue. Google either indexes a page or does not, so a bad robots.txt file (or robots meta tag) could make your page(s) drop completely from Google. But if they are indexed, they are indexed :) The lack of a robots.tx file will not cause Google to knock a couple of points off your PR.