Yeah, actually I think 1 detailed feedback with some criticism/suggestions is much better than 20 'Good job' comments/ratings, as it actually helps a developer to improve. The number of ratings and comments is not that matters, the quality is.
Viewing post in Rank does not require Ratings
yes there is a lot of "that was fun good job" comments which arent really always honest, if we're being honest with ourselves, because we know there is stuff wrong with out games. I think that if you just try to amass ratings, you are going to start deviating towards the median (like 3 star) and your rank will decrease, unless you have produced something totally amazing. better to get +-20 genuine ratings from people and see where you land. Definitely picked up a few contacts this jam that I hope to see again in the next jam.