The document discusses improving online public access catalogs (OPACs) by incorporating more Web 2.0 features. It notes that surveys found users give low ratings to how well current OPACs meet user needs and expectations. The author discusses experiments at the University of Huddersfield to make small improvements to their OPAC, such as adding spell checking, borrowing suggestions, and ratings/comments. While these were modest changes, usage of the OPAC increased. The document advocates for OPACs that better expose library data and foster user participation through tags, reviews and communities.