This study analyzed digital item metadata and keywords from Internet search engines to learn what metadata elements actually facilitate discovery of digital collections through Internet keyword searching and how significantly each metadata element affects the discovery of items in a digital repository. The study found that keywords from Internet search engines matched values in eight metadata elements and resulted in landing visits to the digital repository. Findings of the study indicate that three specific metadata elements are effective in enhancing discoverability of digital collections through Internet search engines, including Dublin Core metadata elements Title, Description, and Subject.