Not that much anyway...
Q:What is the Magic Index number?
A: Each matching user gets computed a magic index, which is a weighting of two factors: the raw number of like interests, and some extra points for sharing uncommon interests.
So the higher the number, the more you share.
Let's take a glance at white_wolf's list;
44 - vivadawolf
55 - timato
77 - mikazo
With me so far?
Now let's look the results of my list;
# Username Magic number index
1. darkminstrel 15.253
That's the first line, the person who shares the most intrests with me has a score of 15.2 (and I'm sure I know this person but can't for the life of me think who it is...)
Let's carry down the list to find the first person on my friends list;
22 growf 6.850
That's right, 22 entries down before I actually recognise someone.
Must fix my intrests...