I love it that the official Mt. St. Helens Volcano website gets it about standards:
If you choose to use the VolcanoCam image on your web site, you are strongly encouraged that the web page meets current W3C web standards and US Government Section 508 accessibility requirements.
Yea! Oh and it is very nice of them to allow use of the VolcanoCam JPEG file for embedding on your own site, provided you keep the aspect ratio, credits, and link back to their site as indicated in their terms of service. I thought about making my own VolcanoCam, but why bother when they did such a nice job of it.