I'm seeing a lot of unwarranted (IMO) down-moderation lately, mostly on posts that express a minority opinion or that question a majority opinion (judging minority/majority based on discussion context). As a result, there are many posts ranked -1 or 0 that probably deserve higher scores.
I'd like to remind moderators that you're supposed to "Concentrate more on promoting than demoting". In the meantime, I'm going to spend all my mod points on posts that I think have been modded down unfairly. I encourage others to consider spending some mod points in this fashion as well.
Over on another site I would frequently have many mods points. Being able to down-mod the crap such as goatse, racist remarks etc. made for a better experience. Limiting the ability to do that might not be a good idea. But, those were the only ones I modded down. The rest of my points were spent bringing the good comments up.