ChatGPT traffic analysis: Insights from 17 months of clickstream data
Discover how ChatGPT is reshaping search habits and web traffic patterns. Analysis of clickstream records reveals changing user behaviors and referral trends in AI-driven search.
Original Research & Studies
Stay on top of the SEO industry with original research and studies. Here are the latest data-backed resources.
We Analyzed 89K LinkedIn URLs Cited in AI Search: Here's What Drives Visibility
What makes LinkedIn content appear in AI answers? Our analysis of 89K cited URLs reveals what AI models trust—and how brands can win visibility.
We Analyzed 8,000 Content Marketing Job Listings: The Shift from Writing to Ownership
We analyzed 8,000 US content marketing job listings to show how roles shift from writing to owning SEO, AI discovery, storytelling, and impact.
SERPs with Ads + AI Overviews Grew by Over 394% in 2025
SERPs keep changing to incorporate both ads and AI Overviews. Read what it means for you.
SEO Split Test Result: Adding Unicode Characters to the Meta Description
Using special characters or emojis in page titles and meta descriptions always generates a lot of discussion within the SEO community. “Is it advisable to use them?”, “Is it good or bad for your SEO performance?“.
SEO Split Test Result: Adding H3 Tags to Products Names on Ecommerce Category Pages
For one of the largest ecommerce parties in the Netherlands, OrangeValley wanted to test if adding headings to the product names of the listed products on ecommerce category pages would have a significant impact on organic traffic.
Split Test: Removing Duplicate Title Tags (HTML Element)
Learn more about the test result from the most recent case study published by SplitSignal: “Deleting Duplicate HTML Titles” on an eCommerce site.
SEO Split Test: Do CTAs in Title Tags Help Search Results?
We added an “order” call to action to the title of some pages on a food ordering site. Check out the result of this SEO split test.
Selecting SEO Elements to Test
The means and inclination to test SEO changes is growing within the industry (finally), but a willingness to test does not always mean it will be successful and worth doing. Not everything is worth testing, and not everything is easily testable. So what follows are some of my lessons/examples from testing SEO changes (split testing or otherwise).
SEO Split Test Result: Adding Local Intent Keywords to Headings
We decided to run a test with SEO split testing software and see what effect local intent keywords added to headings have on organic clicks. Read the short case study to find out.