How to Test Your SEO With Rigor

Since geolocation and personalization mean that not everyone is seeing the same search results, you shouldn’t rely on rankings as your only bellwether as to what worked or didn’t work.

Other Useful SEO Metrics

Many other meaningful SEO metrics exist, too, including:
3 traffic to the page,
3 spider activity,
3 search terms driving traffic per page,
3 number and percentage of pages yielding search traffic,
3 searchers delivered per search term,
3 ratio of brand to nonbrand search terms,
3 unique pages spidered,
3 unique pages indexed,
3 ratio of pages spidered to pages indexed,
3 and many others.