Usability: Date yourself

I'm trying to find out who is playing the local Arts, Beats, and Eats festival this Labor Day weekend. But the AB&E site is down. So I Googled for it, hoping someone else would be mirroring the information or that Google would pick up a post on the different bands' websites. I found a post on a local news station website, saying that the B-52s and The Verve Pipe will be playing. Wait... that was a few years ago...? And actually Sponge "headlined", not the B-52s. Sponge was on last, but everyone left after Love Shack was played.

The article doesn't give a date anywhere. At the bottom, it says copyright 2004 and mentions it's the 2004 article, but at a glance you wouldn't know when the article was released and might think it's current information. Be sure that whenever you post information that will become dated, always include a date with it.