It's funny, when I took a tour of the US Geological Survey, the curator of the collection hated Google (which was just a few blocks away). He said Google is great <i>now</i>, with all their maps, which were far more accurate and had better coverage than the USGS.<p>But what happens when they get bored with map data and get rid of it?<p>He had been ordered to turn over all of their historical arial archives for scanning by Google, and then told the USGS would no longer do arial scanning since Google was doing it. But there was no agreement for Google to turn over their arial scans back to the USGS.<p>At the time we all told him not to worry, Google would never remove data it had collected. Looks like he was a lot smarter than us.