# WBVD - PMF Survey Here are some links about the "Would Be Very Disappointed" (WBVD) survey, used to measure Product-Market Fit (PMF). <img src="https://i.imgur.com/Q6xgl3S.jpg" style="max-height: 300px; margin: 0px 20%;" /> - Sean Ellis on Scaling Authentic Growth - https://www.priceintelligently.com/blog/sean-ellis-on-scaling-authentic-growth - Sean Ellis came up with the WBVD survey and how it can yield predictive quantitative and qualitative feedback on product-market fit, and how segmenting the results can give good direction to teams looking to solve problems for key groups (types of users, decision makers, influencers, etc). - This talk is very good in general, and talk about other useful strategies for product teams. - Superhuman using WBVD survey to achieve PMF - https://review.firstround.com/how-superhuman-built-an-engine-to-find-product-market-fit - This is a great article covering how Superhuman used WBVD survey to get insights into key segments of their users and achieve PMF with their target market - Slack using WVBD survey - I once heard Slack used the WBVD survey in their growth + product strategy. I heard they scored >50% on "would be very disappointed if they could no longer use slack" but I haven't found an article from Slack about it. - Third-party survey on slack users - https://hitenism.com/slack-product-market-fit-survey/ - these are results of a third-party conducting a small survey of slack users to show how the survey works. It's neat in that you can do this for products you don't control. - The survey also shows how to - Counterpoint: "Is the PMF Survey Accurate?" - https://justinjackson.ca/product-market-fit-survey - This is a counterpoint blog post that discusses limitations of this survey. - Juan's notes: key things I find valuable about the WBVD survey: - It is very simple and easy to run (easy for PMs & easy to participate in) - It lets you clearly identify users who are on the margin about the product (dont hate it, but dont love it), which gives a gradient to optimize against. - You can dive into their qualitative, open ended feedback to identify high impact problems to solve that should translate into stronger PMF, with segments that matter. - It helps focus your attention: prioritize the things that convert luke-warm groups into strong advocates (instead of things that convert groups very far from liking the product into barely luke-warm supporters). - You can segment the survey by key user groups and understand how you're doing on key user segments, or key influencers in various organizations (decision makers listen to their teams) - "WBVD" question + open-ended qualitative feedback pair very well.