Testimonial & Social Proof Glossary
Every term you need to know about testimonials, customer reviews, and social proof — explained in plain English.
Whether you're a marketer, business owner, or developer building social proof into your product, this glossary covers all the terminology you'll encounter. From basic definitions like "testimonial" to technical terms like "NPS" and "social proof widget," everything is explained with examples and context.
Testimonial
A written or spoken statement from a customer praising a product, service, or business. Testimonials highlight positive experiences and outcomes to build trust with potential customers.
Example: "This product saved me 10 hours a week!" — Sarah, Marketing Manager
Case Study
An in-depth analysis of how a customer used your product or service to solve a specific problem. Case studies include background, challenges, solutions, and measurable results.
Example: "How Company X increased revenue by 300% in 6 months using our platform."
Customer Endorsement
A public statement of approval or support from a customer, often highlighting specific benefits or features of a product. More formal than a review, often used in B2B contexts.
Example: A CEO publicly recommending your software at a conference.
Review
A critical evaluation of a product or service, typically including both positive and negative aspects. Reviews are often found on third-party platforms like Google, Yelp, or Trustpilot.
Example: A 5-star Google review with detailed feedback about customer service.
Rating
A numerical or symbolic score (like stars) given to a product or service. Ratings provide quick, scannable social proof without requiring detailed reading.
Example: 4.8 out of 5 stars based on 1,200 reviews.
Star Rating
A visual rating system using star symbols (★) to represent quality, typically on a 1-5 scale. Star ratings are universally recognized and increase conversion rates.
Example: ★★★★★ (5 stars) shown on product pages.
Net Promoter Score (NPS)
A metric measuring customer loyalty by asking: "How likely are you to recommend us to a friend?" on a 0-10 scale. Scores of 9-10 are promoters, 7-8 are passive, 0-6 are detractors.
Example: An NPS of +50 is considered excellent.
Wall of Love
A curated display of customer testimonials, tweets, and reviews, typically shown on a website's homepage or dedicated testimonial page. Named after the social media trend.
Example: A grid of customer tweets and testimonials displayed above the fold.
Trust Badge
A visual symbol or certification mark that signals credibility and security. Common examples include SSL certificates, money-back guarantees, or industry certifications.
Example: Norton Secured badge, BBB Accredited Business logo.
User-Generated Content (UGC)
Any content created by customers rather than brands, including photos, videos, reviews, and social media posts. UGC is authentic and highly trusted by potential customers.
Example: Customer photos of your product posted on Instagram.
Customer Advocacy
When satisfied customers actively promote your brand to others, often without incentives. Advocates are your most valuable marketing asset.
Example: A customer who regularly refers friends and defends your brand on social media.
Referral
A recommendation from an existing customer that directly leads to a new customer. Referrals have the highest conversion rates of any marketing channel.
Example: "My friend Sarah told me to try this product."
Word of Mouth
Organic conversations and recommendations between people about a product or service. The most trusted form of marketing, though difficult to track and control.
Example: A customer telling their colleagues about your service at lunch.
Brand Ambassador
A customer or influencer who represents and promotes your brand over an extended period, often through formal partnership or sponsorship agreements.
Example: An athlete who wears and promotes a specific shoe brand.
Influencer Testimonial
A testimonial or endorsement from someone with significant social media following or authority in a specific niche. Can be paid or organic.
Example: A beauty influencer reviewing your skincare product on TikTok.
Video Testimonial
A recorded video of a customer sharing their experience with your product or service. Video testimonials are highly engaging and convert better than text alone.
Example: A 90-second video of a customer explaining how your product solved their problem.
Written Testimonial
A text-based customer testimonial, typically 2-5 sentences long. The most common and easiest-to-collect form of testimonial.
Example: "This software cut my admin time in half. Game changer!" — Mike T.
Customer Success Story
A narrative showcasing how a customer achieved specific results using your product. Similar to case studies but often shorter and more story-focused.
Example: "How Jane grew her freelance business from $50k to $200k using our CRM."
Testimonial Request
A formal or informal ask sent to customers requesting feedback or a testimonial. Timing, tone, and ease of response significantly impact success rates.
Example: An email sent after project completion asking for a review.
Testimonial Page
A dedicated website page showcasing customer testimonials, case studies, and reviews. Well-designed testimonial pages increase trust and conversions.
Example: A /testimonials page featuring 20+ customer stories with photos.
Credibility Indicator
Any element that increases perceived trustworthiness, including testimonials, badges, certifications, press mentions, or client logos.
Example: "As featured in Forbes, TechCrunch, and Wired."
Peer Review
Feedback or testimonial from someone in the same industry or role as your target customer. Peer reviews are especially powerful in B2B marketing.
Example: A testimonial from one developer recommending your tool to other developers.
Expert Endorsement
A recommendation from a recognized authority or expert in your field. Expert endorsements carry significant weight and boost credibility instantly.
Example: A doctor endorsing a health supplement, or a security expert recommending your software.
Customer Quote
A short, memorable statement from a customer, often pulled from a longer testimonial or interview. Quotes are easily shareable and great for marketing materials.
Example: "Best investment I've made in my business this year."
Testimonial Carousel
A rotating display of multiple testimonials on a website, allowing visitors to see various customer experiences without scrolling extensively.
Example: An auto-rotating section showing 10 testimonials, 5 seconds each.
Attribution
The identifying information attached to a testimonial, typically including name, title, company, and sometimes photo. Proper attribution increases testimonial credibility.
Example: "— Sarah Chen, VP Marketing at Acme Corp"
Testimonial Collection
The systematic process of gathering customer feedback and testimonials through surveys, emails, forms, or automated tools.
Example: Using TestiGather to automatically request testimonials after successful projects.
Conversion Proof
Evidence that demonstrates your product delivers results, including metrics, before/after comparisons, or outcome-focused testimonials.
Example: "Increased my conversion rate from 2% to 5% in 30 days."
Testimonial Widget
An embeddable code snippet that displays testimonials on your website, often with customizable styling and layout options.
Example: A TestiGather widget showing your latest 5-star reviews.
Feedback Loop
A continuous process of collecting, analyzing, and acting on customer feedback to improve products and marketing. Positive feedback becomes testimonials.
Example: Monthly surveys that identify happy customers for testimonial requests.
Ready to collect testimonials that convert?
TestiGather makes it easy to request, collect, and display customer testimonials with automated workflows and beautiful widgets.
Social Proof
A psychological phenomenon where people follow the actions of others to determine correct behavior. In marketing, it's evidence that others trust and use your product or service.
Example: "Join 10,000+ businesses using our platform" is a social proof statement.