You can use Google Analytics to see who is viewing your public Posterous Spaces.

All you have to do is follow these simple steps:

1. Sign up for Google Analytics here. Use your Posterous space URL. If you are using a custom domain, use that url instead.

2. Find the Google Analytics Domain ID for your site. This looks something like UA-123456-1.

3. Click Spaces » Space Settings » Analytics to set your Google Analytics Domain ID to that ID you found:

4. You’re done!

Sometimes it takes a while for Google to register the new code and gather statistics. Once it does, you can log in to Google Analytics and click “View Report” to see your stats.