It will be interesting to see ACA's reply, but my guess is that they won't care. In fact, they might even appreciate the free advertising. It's more likely that someone will buy the maps based on this exposure rather than decide not to buy the maps that they would have otherwise bought.

This thread takes many strange twists and turns. After we whined endlessly about "why doesn't he post?" (similar to the dreaded "why doesn't he wave?"), we're now moved on to copyright law.