XNA Intermediate XML format

I've been messing around with XNA's automagically parsed intermediate format, and finding good documentation has been horrible.  I finally found a good resource here.

I'm currently writing the Level class for our game and has the following structure so far:

public string name;                                     //level name

public List<List<Vector2>> playerClip;           //List of lists of coordinates for all player clip

public List<Vector2> magnets;                     //list of magnets throughout level

public Vector2 magnetHead;                       //initial magnet head spawn

public Vector2 playerSpawn;                       //initial player spawn

Serializing this object into XNA intermediate format looks something like this:

<?xml version="1.0" encoding="utf-8" ?>

<XnaContent>

  <Asset Type="DataTypes.Level">

    <name>TestLevel</name>

    <playerClip>

       <Item>x y x y....</Item>

       <Item>x y x y...</Item>

    </playerClip>

    <magnets>x y x y...</magnets>

    <magnetHead>x y</magnetHead>

    <playerSpawn>x y </playerSpawn>

  </Asset>

</XnaContent>

Yeah, Vector2's are space-seperated (who does that?) and a List within a List is stored in separate bins tagged with <Item>.  It also 'compiles' the xml files, just checking for any syntax errors at compile time.  Yeah, it's....odd.