and obviously a lot of people have decided to test the 4 star theory... there are now over 100 votes and this strip has 3.5/5 stars even though it's worth at least a 4 in my opinion.
It appears that the default ratting for any given strip is 4 stars, since I have rated strips 0.5 stars (in the name of science) and they still read 4 stars, even when I was the 4th or 5th person to rate that strip. I propose that it takes a heavy majority of voters voting high or low to change the default setting.
Later on there are strips that are rated 5 and 3, but these tend to have over 1000 ratings at their back.