Boris

Boris

Boris Pfeiffer is the co-founder and CEO of Riddle.com, a leading platform for interactive quizzes and audience engagement. He brings a wealth of experience from the gaming and tech industries, having previously led Kabam's European operations and founded his own game studio. Earlier in his career, Boris served as General Manager of Monster.com's Internet Advertising Division in Europe. Boris has deep roots in the quiz industry. As General Manager Europe for Tickle.com, he helped scale the popular quiz portal into the world's 28th largest website by 2004, leading to its acquisition by Monster.com for over $100 million. During this time, he managed international teams of quiz writers and psychologists, developing quiz content for brands, mobile apps, and millions of users across Europe in multiple languages. In addition to his work in quizzes and gaming, Boris has supported a variety of startups across Asia, the U.S., and Europe. He is the author of two books - Facebook Fan Pages (2011) and Quizmaster (2017) - and a proud father of two. He has been happily married for over 25 years.


Data protection in contact forms - how to create GDPR compliant contact forms

Data Protection in Contact Forms: Requirements, Tips, and Templates

Contact forms are among the most frequently used methods for collecting personal data. That’s why it is particularly important to make contact them GDPR-compliant. Data such as a user’s first name, last name, and email address are generally requested. This data is particularly worthy of […]

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Increase time spent on your website with quizzes

Maximize Your Search Engine Ranking by Increasing the Time Spent on Your Site

Search engines like Google or Bing will always provide users with links to the most relevant and valuable content first. The search engine determines the informational value of the content by measuring whether the user remains on the clicked link or returns directly to the […]

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Riddle is GDPR and CCPA compliant

Riddle Quizmaker is Fully CCPA-compliant

CCPA compliance Disclaimer: We do not provide legal advice. We recommend that you seek legal advice from a lawyer about how Riddle’s quiz maker complies with the CCPA.   Riddle is fully CCPA compliant  California introduced its California Consumer Privacy Act (CCPA), which took effect on January […]

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Create an advent calendar using quizzes and mini games with riddle.com

Create an Interactive Advent Calendar for Your Website

No matter when you read this post, you’re probably already planning for the next Christmas season! It is the best season to generate new leads and sales, as people are often at home and browsing the web for Christmas gifts. Give them something to return […]

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A.I. Quiz Maker from Riddle.com - create quizzes in seconds

Riddle’s AI Quiz Maker Helps Generate Content in an Instant

Introduction Quizzes and personality tests are considered powerful marketing tools. Benefits range from engaging your audience with interactive content, driving traffic to your website, gathering important customer intel, and generating high-quality leads. However, creating a good quiz takes time – you’ll need to research the correct […]

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143 quiz titles for online quizzes across a range of topics, as well as tips and best practices to crafting compelling quiz titles.

143 proven quiz titles your audience will love

Want to use online quizzes to drive engagement, collect leads, and supercharge your marketing funnel? Nothing – nothing – is more important than the right quiz title. Think of your quiz title like the cover of a book. You might have the most insightful questions […]

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How to create GDPR-compliant content

How to Create GDPR-Compliant Interactive Content

We prepared this guide as a summary of the key areas to focus on if you want to create GDPR-compliant interactive content with Riddle’s quiz maker. In 2025, GDPR-compliance is more important than ever, with TikTok being fined €530 million and Google €200 million – and over […]

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What is an NPS - Net Promoter Score

Net Promoter Score (NPS): Definition, meaning & calculation

What is NPS® ? The Net Promoter Score ® (almost always shortened to NPS ®) is a universal measure of customer satisfaction and the strength of customer loyalty. It is based on the key question: “How likely is it that you would recommend our company/product/service […]

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Why should enterprise organizations use the Riddle quiz maker?

Transform Engagement with Riddle’s Enterprise-grade Online Quiz Maker

It’s harder than ever to capture (and keep) your audience’s attention in today’s digital landscape. Cutting through the noise requires innovative approaches and content that turns passive browsers into active participants. This is where Riddle comes in. As an enterprise quiz maker, Riddle offers a […]

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Make your own crossword puzzle

Make A Crossword Puzzle

Creating your own online crossword puzzle Learn how to create a crossword puzzle with Riddle.com. Creating a crossword puzzle for your website is a fun activity and will also help you with reader engagement, plus increase the time your visitors spend on your website. Crossword […]

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