We have a Spot Locator, a small GPS beacon that we activate whenever we move to a new place or every six hours, more or less, while underway. Click on the “Where are we?” link to the right and you’ll be taken to a map showing our current location. If nothing comes up it’s because we’re still in the same place and forgot to activate the Spot after a week.
Second, we both write entries in the blog. You can usually tell who’s writing by the style or subject matter, but if not, each post is labeled by author right under the title.