I don't know about crucial, but a recent amber alert went out last week. It contained a bit.ly link to the CHP's Twitter page and I couldn't see the information. I clicked on it because the alert was from my town, but light on the details.
Surely a public post on a CHP website would have gotten the job done better.
In this case it seems that linking to the CHP website would likely crash their web servers. Understandable:)