I've been watching my Bloglines search feed for "virtual earth" get swamped over the last couple of days. Far too many posts to read (whoever comes out with an RSS reader that can rank or otherwise filter posts is going to be onto something pretty hot). In the head to head with Google, who is winning recognition? The basic trend graph below gives some indication:
Virtual earth has a bit of a way to go. Another interesting thing to look at is how separable mentions of the two systems are. We can look for mentions of one that don't contain the other.
This suggests that until recently Google Maps was mentioned without discussion of Virtual Earth.
On the other hand, perhaps not surprisingly, Virtual Earth is mentioned half the time with one of Google's mapping products.
Finally, here is how links to these systems are trending: