People that write replies like the one above are what give Linux a bad name.
Maybe, just maybe, you could offer some helpful advice before jumping down someone's throat. The article writer had just installed Linux yesterday, and his son is having problems with websites. Your answer to his problem is to attack him? How mature.
1) Two days ago, his son's websites worked fine in IE on XP. Today, they don't work in Mozilla on Linux. "If you could only be bothered to find out what they are" is not a helpful response to his problem, especially when he just discovered the problem. Suggesting an alternate browser that worked better for you when you had problems would be. Personally, I'm curious as to whether the sites work in Mozilla on XP or if it's an issue specific to Mozilla on Linux.
2) Try explaining to an eight year old that he can no longer visit lego.com because it doesn't pass the w3 validator. If you think this is an easy task, I suspect you don't have much exposure to small children.
3) In the public eye, Linux is not just a kernel. It's the whole distribution that comes on the CD or in the download. I love how Linux aficionados are quick to claim "it's just a kernel" whenever you run into a problem with Linux as a whole. No one uses just the kernel.