Idea: Warning, that page is old!

As I scour the web for info I often come across blog and forum posts. There’s nothing more irritating than getting swept up in what seems to be exactly what you were looking for, just to find out it’s outdated after reading half the bloody thing.

Google’s search filter for when the results were updated is probably the best approach, but I’d still like a big flashing red light when I’m entering a page older than a year. That’s practically an internet fossil.