It’d be nice if everyone posted product & service ratings online. Unfortunately they’re much more likely to post something if it’s negative. For example, take a look at Apartment Ratings.com. Most of the comments are negative. Most people who had a positive experience didn’t post. (And some of the positive posts seem to be from employees of the company being rated...) If everyone posted ratings, they’d be much more useful. (As you might guess, I’m looking for a place to live...)
I find that I too am guilty of not posting enough ratings. I’m far more likely to post negative ratings than positive ones, even though I have a positive experience with most products I use (like this Thinkpad T40 I’m using right now). I’m not sure what the solution to this problem is. It needs to be much easier to post reviews in a way that can be aggregated.