I can understand everyoune's desire to get more ratings. I have it myself. And the discussion board is full of "rate for rate" messages and it's somehow ok. I have that sin too.
But people, we should have some limits. If someone starting just posting his link on every game pages without even noticing he posting on the same page several times, it shows how low he values other community members and their time.
I personally rated and commented about fifty games and answered every comment I have. But I got only 24 rantings. And I think that's ok. Sombody answered me, sombody didn't. I don't think they are obligated to do it.
Let's be good neighbors for the jam sake. Let's leave game rate page comments for comments about games. It should've been jam about game design, not about marketing.