Sam Ghods of Box.net – Make Your Business 10X Faster with Box's New Search:

"We re-evaluated our technology and decided to make a switch to a fully distributed and scalable search platform using the open source project Solr, powered by Lucene. If Solr sounds familiar, that's because odds are good you're already using it. Companies like Salesforce, LinkedIn and Twitter are successfully using Solr on a massive scale, and we're excited to join them in using and developing on top of this mature, robust technology."