Following on from my previous post about Google Blog Search accepting pings, it appears that Pingomatic is already sending ping messages into the Google Blog Search service.
By default, WordPress only sends pings into Pingomatic, which then distributes them to a lot of other services. To verify that Pingomatic has already been updated, the previous post title and URL were amended. A few minutes later, you could do a search using the Google Blog Search and the newly amended title and URL were visible in the results.
I love a good service.