Shutterstock now looks like this
Shutterstock
6.6 
.23
The 6.6 is the rating which just means the average of everone's vote in the
microstock poll is a 6.6. It is a simple average where everyone's votes are equally weighted.
.23 is the change from last month and the arrow is the direction it changed. so last month Shutterstock must of had a 6.37 rating and it has gome up .23 points.