Leaving that aside, if the average rating in Joe's WoT is 3.14, whereas Moe has received his 33 trust from exactly 4 people, averaging thus 8.25, there's suddenly exposed a very strange divergence between the two groups. Sure, it is legitimately possible for Moe's subgroup to be much more tightly knit, and thus his friends much more familiar with him than is the case in Joe's group. This happens, but not without other consequences, which again add valuable information into the credibility equation.

This information is misleading. Why give weight to the wisdom of the crowd? Who cares what 100 random schmoes say?