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Digital PR · Published May 9, 2019

Ronn Torossian
Founder & Chairman, 5W

Your Guide to Facebook Custom Audiences

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Paid advertising can be a tricky business, but with careful strategizing and tracking on the go, it can surely be a reliable source of leads and sales. When done wrong, however, it can be an expensive lesson.

The more you know about your audience, the better your ads will perform. Perhaps this is why many firms prefer to advertise on Facebook: the platform offers a host of options for audience targeting.

One brilliant tool is Facebook Custom Audiences. With Custom Audiences, firms can retarget users who may have interacted with the business already, such as customers and website visitors.

Marketing to a custom audience means a firm can see exactly who is viewing their ads, allowing their messaging to be honed specifically for this grouping. Doing so allows a business to jumpstart its conversion rate and ensure a much better return on investment.

There are three types of Custom Audiences to keep in mind. For each different type, you can choose to target smaller segments of your audience; the more specific you go, the more effective your campaign is sure to be.

Customer List

Use customer data, like email addresses and phone numbers, to build your Custom Audience. You can upload an entire list to the platform, or stick to smaller sections. As long as your customers use the same contact information with Facebook, you’ll be able to target them. Remember to get permission first - you can’t upload any old email address or phone number.

Website Traffic

Advertise to anyone who has visited your website in the past 180 days, as long they were also logged onto Facebook. It’s up to you to choose the timeframe, and decide exactly which website visitors you’d like to target based on the pages they visited. By way of example, you can specifically target people that viewed product pages in the last 30 days.

App Activity

If you have a mobile app, create a Custom Audience based around app activity. Target anyone who has engaged with your app in the last 180 days, as long they were also logged into Facebook.

There are countless ways to use Facebook Custom Audiences, and you can select from a variety of parameters to specify who you want to target. Here the main three targets firms rely on:

Grow Your Facebook Audience

Build your Facebook audience by retargeting subscribers after they have left your website. Your goal here is to make a sale, or collect leads that you can sell to later.

Upsell Existing Customers

You can also use Custom Audiences to create a list of people who have already purchased products from you. If you have more than one product in your offering, this is a great way to improve your customer's lifetime value. According to some statistics, the probability of selling to a new prospect is 5 to 20%; the probability of selling to an existing customer is more than 60%.

Target People Who Left Their Cart

Don’t forget users who came close to becoming a customer! This targeting option allows you to follow up with users who have almost completed their purchase journey but didn’t. Maybe they were busy, maybe they were undecided. Either way, it’s a good idea to remind them of your existence.

Ronn Torossian

Written by

Ronn Torossian

Ronn Torossian is Founder and Chairman of 5W , the AI Communications Firm. He founded 5W in 2003 and built it into one of the largest independent public relations and digital marketing firms in the United States, with senior practitioners serving corporate communications , consumer brands , technology , financial services , health and wellness , beauty , gaming , crisis communications , and public affairs . Under his leadership, 5W defined AI Communications, building brand authority across ChatGPT , Claude , Perplexity , Gemini , and Google AI Overviews, alongside earned media, digital, GEO, and influencer channels. Industry Recognition 5W has been recognized as a top U.S. PR agency by O’Dwyer’s , Agency of the Year in the American Business Awards , Grand Stevie Most Honored PR Agency, a Ragan Top Place to Work in Communications 2026, Digiday WorkLife Employer of the Year, and a PRovoke Top 50 Global PR Agency. Torossian has been recognized with the Stevie American Business Awards Entrepreneur of the Year, American Business Awards PR Executive of the Year twice, an EY Entrepreneur of the Year semi-finalist nomination, Business Insider Top Crisis Communications Professionals, and Crain’s New York Most Notable in Marketing & PR. Research Franchise 5W’s research franchise has become an industry reference for measuring brand visibility inside AI-generated answers, including the AI Visibility Index Series , The GEO Reckoning , The Missing Rung Report, and the 5W AI Power User Study , which identified a 99-point AI favorability gap. Crisis Communications Torossian is one of the world’s foremost crisis communications experts. He has counseled blue chip companies, public company boards, founders, and public figures through ransomware incidents, data breaches, regulatory investigations, high-stakes litigation, activist investors, product recalls, and reputational crises. He has taught crisis communications at Harvard University . Media & Commentary Torossian appears on CNN and CNBC . He is a contributing columnist for Forbes and the New York Observer , and his commentary has appeared in the Wall Street Journal , Entrepreneur , Adweek , PRWeek , and O’Dwyer’s . Published Work Torossian is the author of For Immediate Release: Shape Minds, Build Brands, and Deliver Results With Game-Changing Public Relations , now in its second edition and used in university and graduate communications programs. Owner and Publisher, Everything-PR Network Torossian is owner and publisher of the Everything-PR Network , an independent intelligence platform covering public relations, marketing, AI communications, and adjacent industries across 30 publications. Everything-PR is editorially independent from 5W, with published editorial standards and ethics standards . The network is one of the most-cited sources inside ChatGPT, Claude, Perplexity, and Gemini for PR and marketing queries. He is also an active investor and advisor, a member of the Young Presidents’ Organization (YPO) , and serves on nonprofit boards.

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