I found this fascinating quote today:
Databases like HapMap and Chemspider are increasingly useful. Community-built resources like WormBase/WormBook/WormAtlas are great examples of projects that have drawn researchers into donating their valuable time and efforts. All of these take principles of Web 2.0 — from crowdsourcing to remixing of previously available data — to build new tools that create efficiencies. Information is aggregated and can be processed in one step, rather than having to gather and try to tie together data from disparate sources. It’s still the early days for these types of resources, and likely the really useful groundbreaking ones are still ahead of us.David Crotty under, The Scholarly Kitchen, Feb 2010
You should read the whole article.