Exa is a new tool that leverages web data as a database, offering a unique and user-friendly interface similar to Airtable for comparison shopping across various products and services. Early adopters noted its potential for lead generation and integrating web-based documents into existing systems. However, some users reported issues with the speed of results, limitations in the comprehensiveness of data provided, and a need for clearer UI updates during searches. The platform is also encouraged to add features like caching and result sharing. Despite some concerns, users view Exa as an innovative solution in a space dominated by restrictive data usage policies.