The use of internet ad-blocking software as a form of online ad avoidance is increasing rapidly, and websites/online advertisers are seeing their revenues decline as a result. Ad-blocking software is free to download, easy to use, and available across a variety of platforms. Approximately 10% of internet users are now blocking ads, and year-over-year growth is close to 40%. Websites and online advertisers have pushed users to whitelist—the term used when users disable their ad-block for a specific site—but have had limited success. This paper evaluates how ad characteristics, demographics, and exposure affect internet ad-blocking usage. Through a survey and statistical analysis, it was determined that demographics and exposure are significant drivers: younger internet users are more likely to use ad-blocking software, and a major inhibitor of ad-blocking growth appears to be lack of mainstream exposure. However, ad characteristics do not have an effect on ad-blocking usage or whitelisting likelihood. The results suggest that ad-blocking software is poised for long-term growth, and websites/online advertisers will need to adapt.