Dropcatching is the process of registering often highly contested domain names after they expire and become available for registration once more. Once domains ‘drop’ i.e. become available for registration again, they are typically re-registered within milliseconds.
Dropcatching is highly competitive and the resources of several thousand registrars can often be utilized.
Domains most valuable domains to ‘park’ for monetization are commonly expired domains with a high quality SEO profile; DA, Alexa, Similar Web, number of and quality of backlinks. Please see the section Important Metrics.