It is a fallacy that many believe if the plastic number is higher it is a better plastic. The different number code indicates the different uses for each type of plastic.
So if you want to carry water, PET 1 or PVC 3 should be good enough.
I have a funny feeling that some of our hawkers in JB are so fed up with Singaporeans increasing the prices of goods, that they have come up with this to poison our lovely neighbours.
Don't be too shocked if I tell you that some of our KL & Penang hawkers may be using plastic too, since the price of floor has gone up.
I recommend that you use FireFoxor Flock as they are excellent web-browser and RSS readers. In fact with Flock, you can easily post your blog (without any additional plugins) from your browser.