Bearing Drift has this post regarding the campaign website of Suffolk County Sheriff candidate Timothy L. Mallory.
Apparently Mr. Mallory was using the Virginia State Seal on his website, amongst a few other naive mistakes. He did not realize that its use was restricted from non-governmental purposes.
When designing my site, I originally wanted to use the State Seal myself, not to make the place look "official" in any way, but just because I think its a great design. I suspected there were some sort of restrictions on the use of the seal, but could not find any guidelines on its use.
I finally decided to use just a sketch of the image in the center of the Seal, along with the motto. I certainly hope this does not legally constitute an official State Seal.