The Jane Goodall Institute has a Google Earth-based geoblog. This allows you to open the blog entries in their relevant location on Google Earth providing a geographical context to the writing.
The Shackleton Geoblog is another great example. This time taking a historic adventure and putting it in its geographical context, based on the diary entries and ship logs of Ernest Shackleton during the Endurance expedition.
More information on this geoblog can be read on the Google Earth Community page