In order for SmarterStats to retrieve SEO stats, you'll need to turn the feature on by selecting which search engines you'd like it to retrieve from.
1. While logged into SmarterStats as a site administrator, click "Settings."
2. Expand the "Site Settings" node, then select "SEO Settings."
3. Click the "Search Engines" tab, then select which search engines you want stats from.
4. Then click "Save."