Asked by Marketers: Real questions from more than 1,450 annual meetings with marketing leaders

What is Asked by Marketers?

Asked by Marketers is Sellforte's growing library of practical answers to real, anonymized marketing measurement questions. The questions come from more than 1,450 annual customer and prospect meetings with marketing, ecommerce, and analytics leaders.

When is a market or channel too small to justify an incrementality test?
When is a market or channel too small to justify an incrementality test?

When is a market or channel too small to justify an incrementality test?

Sep 3, 2026 8 min read

All questions

When is a market or channel too small to justify an incrementality test?
When is a market or channel too small to justify an incrementality test?

When is a market or channel too small to justify an incrementality test?

Sep 3, 2026 8 min read
What does it mean when MMM says media drives only a small share of total sales?
What does it mean when MMM says media drives only a small share of total sales?

What does it mean when MMM says media drives only a small share of total sales?

Sep 2, 2026 8 min read
How should we prioritize incrementality tests across markets and channels?
How should we prioritize incrementality tests across markets and channels?

How should we prioritize incrementality tests across markets and channels?

Sep 1, 2026 7 min read
Can you trust Meta Conversion Lift tests for MMM calibration?
Can you trust Meta Conversion Lift tests for MMM calibration?

Can you trust Meta Conversion Lift tests for MMM calibration?

Aug 31, 2026 8 min read
How often should you retrain your Marketing Mix Model (MMM)?
How often should you retrain your Marketing Mix Model (MMM)?

How often should you retrain your Marketing Mix Model (MMM)?

Aug 28, 2026 7 min read
What is the right holdout-group size for an incrementality test?
What is the right holdout-group size for an incrementality test?

What is the right holdout-group size for an incrementality test?

Aug 27, 2026 7 min read
Should we run a full marketing blackout or a partial holdout test?
Should we run a full marketing blackout or a partial holdout test?

Should we run a full marketing blackout or a partial holdout test?

Aug 26, 2026 7 min read
Is attribution enough on its own? Why MMM and incrementality testing are required
Is attribution enough on its own?

Is attribution enough on its own? Why MMM and incrementality testing are required

Aug 25, 2026 7 min read
What changes when an ecommerce or retail company adopts incrementality?
What changes when an ecommerce or retail company adopts incrementality?

What changes when an ecommerce or retail company adopts incrementality?

Aug 24, 2026 7 min read
How should geo-lift and conversion-lift studies be combined when calibrating MMM?
How should geo-lift and conversion-lift studies be combined when calibrating MMM?

How should geo-lift and conversion-lift studies be combined when calibrating MMM?

Aug 21, 2026 7 min read
Should MMM calibration separate traffic, engagement, awareness, and sales campaigns?
Should MMM calibration separate traffic, engagement, awareness, and sales campaigns?

Should MMM calibration separate traffic, engagement, awareness, and sales campaigns?

Aug 20, 2026 9 min read
Can we use incrementality evidence from one country to calibrate an MMM in another?
Can we use incrementality evidence from one country to calibrate an MMM in another?

Can we use incrementality evidence from one country to calibrate an MMM in another?

Aug 19, 2026 7 min read
How should we weight multiple incrementality tests when calibrating an MMM?
How should we weight multiple incrementality tests when calibrating an MMM?

How should we weight multiple incrementality tests when calibrating an MMM?

Aug 18, 2026 5 min read
Why do platform ROAS and incremental ROAS tell such different stories?
Why do platform ROAS and incremental ROAS tell such different stories?

Why do platform ROAS and incremental ROAS tell such different stories?

Aug 17, 2026 6 min read
When should an omnichannel retailer use MMM, MTA, or incrementality testing?
When should an omnichannel retailer use MMM, MTA, or incrementality testing?

When should an omnichannel retailer use MMM, MTA, or incrementality testing?

Aug 16, 2026 10 min read
How should we cut our marketing budget while protecting growth?
How should we cut our marketing budget while protecting growth?

How should we cut our marketing budget while protecting growth?

Aug 14, 2026 9 min read
Can MMM and Incrementality testing measure the full sales impact of mid-funnel and top-of-funnel campaigns?
Can MMM and Incrementality testing measure the full sales impact of mid-funnel and top-of-funnel campaigns?

Can MMM and Incrementality testing measure the full sales impact of mid-funnel and top-of-funnel campaigns?

Aug 13, 2026 6 min read
Why can a calibrated MMM show a different incremental ROAS than a conversion-lift study?
Why can a calibrated MMM show a different incremental ROAS than a conversion-lift study?

Why can a calibrated MMM show a different incremental ROAS than a conversion-lift study?

Aug 11, 2026 8 min read
How can you turn a mandatory budget cut into an incrementality testing opportunity?
How can you turn a mandatory budget cut into an incrementality testing opportunity?

How can you turn a mandatory budget cut into an incrementality testing opportunity?

Aug 10, 2026 6 min read