Spark Plugs.

I was doing some reading up on spark plugs when I came across this useful article;
"How do I read a Spark Plug?"

Being able to "read" a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine's overall operating condition.

I change my spark plugs yearly, not even bothering to check the mileage. lol. But lately, my recent spark plug change was for a mere 2 months because I wanted to "read" my spark plug. So this is how my spark plug looks like.

It looks good to me. =)