Well, the article is a fairly factual article on the use and reasons behind a tin foil hat... it's not the article is sating that you actually need one to prevent mind control or brain cancer...
The really sad thing is that tinfoil from the supermarket doesn't actually prevent enough radiation to prevent radio frequencies with any great efficiency. You'd need to make it out of a denser metal, like copper or gold.
You used to be able to buy faraday cage baseball caps actually. I forget exactly where I saw them for sale, but they're your standard NY cap with a copper mesh on the inside. This was back in the day when the phones had switched from analogue to digital and people were saying you'd get cancer from the increase in signal strength *jerk off motions*