To improve conversion rates and reduce user drop-off when it comes to linking financial accounts, Plaid recommends several strategies. First, lead with the benefits of using Link, such as speed and cost savings, and use social proof to reassure users that others have connected their accounts before. Second, set clear expectations by presenting the account linking option as a recommended path and explaining what data will be collected from the user's account. Third, bring transparency and security to the forefront by explaining how Plaid uses 256-bit encryption and highlighting the user's control over their data. Finally, use Link customizations and SDKs to personalize the institution list, add branding to the consent pane, and upgrade to the latest version of the Plaid SDK to access exclusive features and optimizations. By implementing these strategies, businesses can improve conversion rates and activate more users.