MANY other web sites have this same issue. I run into this same problem on a couple of flight planning web sites I use to research weather and file flight plans.
As Chris Bojanower has clearly explained, it has to do with links that use what is called the "mouseover" action. Not all the links here use the mouseover function. Some are straight links without any mouseover call. Those will work fine on a single click.
Web developers do NOT have to follow an operating system when designing their web sites. Web techniques are well established and universal across all operating systems. OS developers must design their OS to handle standard web technology, like the mouseover function. That function has been around for years and it worked fine in IOS 5. Apple needs to fix this in IOS 6.
This is NOT a forum software issue. It is an Apple IOS 6 issue.