Pattern #43: Long Titles

Pattern Author: Ronny Kohavi - Technical Fellow and VP, Analysis and Experimentation @ Microsoft

Based on 3 Tests, Members See How Likely This Pattern Will Win Or Lose And Its (?) Median Effect

Almost Certain Loser
Almost Certain Winner
Long Titles
  1. Replace: Short Link Titles With Longer Ones Benefits

    The idea is to move ad text to the title line to make it longer. The additional copy could be something specific about the offer, or a key benefit.

Median Effects



Ex: First Action

(1 tests)



Ex: Leads, Quotes

(1 tests)



Ex: Trials



Ex: Future Action



Ex: Transactions

(1 tests)




(1 tests)



Ex: Return Visits



Ex: Social Shares


Test #359 Tested on by Samuel Hess Samuel Jun 11, 2021

Find Out How It Performed With 129,030 Visitors

Product Desktop, Mobile
  • Measured by adds to cart   |   p-val (?)

  • Measured by unique sales   |   p-val (?)

In this experiment, product titles were extended with descriptive copy. Instead of just showing the product name, "with organic cotton" was appended on product and category/listing pages. Impact to adds to cart and sales was measured.

Get Access To See The Test Results

Test #314 Tested on by V. Barros Peixoto Vinicius Aug 21, 2020

Find Out How It Performed With 6,533,516 Visitors

Product Desktop, Mobile
  • Measured by filling out any lead form   |   p-val (?)

In this experiment, a dynamic page title was generated and added at the top of the screen. The first few words from a property description were used to dynamically generate these titles. The effect on leads was measured.

Get Access To See The Test Results

Test #133 Tested on by Ronny Kohavi Ronny Dec 13, 2017

It Worked Here

Listing Desktop, Mobile


In 2012 a Microsoft employee working on Bing had an idea about changing the way the search engine displayed ad headlines. Developing it wouldn’t require much effort—just a few days of an engineer’s time—but it was one of hundreds of ideas proposed, and the program managers deemed it a low priority. So it languished for more than six months, until an engineer, who saw that the cost of writing the code for it would be small, launched a simple online controlled experiment—an A/B test—to assess its impact. Within hours the new headline variation was producing abnormally high revenue, triggering a “too good to be true” alert.

HBR, September–October 2017 Issue,

Note: This experiment was a solid success and replicated multiple times over a period of months. It worked at Bing and had a profound influence. The only reason why we atributed a 0.25 point (a "Maybe") was because we don't have the exact sample size and conversion data.


For each pattern, we measure three key data points derived from related tests:

REPEATABILITY - this is a measure of how often a given pattern has generated a positive or negative effect. The higher this number, the more likely the pattern will continue to repeat.

SHALLOW MEDIAN - this is a median effect measured with low intent actions such as initiating the first step of a lengthier process

DEEP MEDIAN - this is derived from the highest intent metrics that we have for a given test such as fully completed signups or sales.