Are you pondering what I'm pondering?

First of all, this post has almost nothing to do with the title. I just liked it because it reminds me of Pooh. Silly old bear.

I say "almost" because you will need to do some pondering.

Before reading further, I need you to consider this:

All of us Singaporeans know that our Identification Numbers are in this format S1234567X, where X is an alphabet (A, B, C, D, E, F, G, H, I, J or Z).

We have our unique numbers already, why have the alphabet?

The question: What's the purpose of the alphabet behind our identification numbers?

******

Yesterday was the last day before the extended weekend, and my sister's birthday. And some people took the liberty of extending further by not coming to school at all. Jolly.

After school I just headed home, after browsing through the VCD rental shop and found nothing. I came back, and downloaded this week's Naruto fansub, episode 119. It was quite a disappointing episode, with some parts already shown in episode 118. And the animation and use of music were bad, too. Overall not very good. While it downloaded I went out with my parents for lunch, and they dropped me off back here after lunch and they went shopping.

I was on the com until they came back, and I watched the episode. I fell asleep on my bed after that, and woke up as my sister prepared to go out to party with her friends. I had dinner with my parents, and decided to defragment my hard drive. Took me a long time, and I fell asleep again. I managed to turn off the computer when my mom woke me up though, she was watching the VCDs again.

The only thing I could think about all day was eat and sleep. I wasn't even interested with the computer. It was all in all quite a boring day, and I just came back from dinner.

I'm thinking about using my own pics to make a skin. Any objections?

*****

Anyway, got the answer to my question yet? If you haven't, think harder!

If you need a clue, highlight the text below:
>It's a precaution!<

Enjoy! The answer will be shown on Sunday.