Delicious

 Delicious  is a bookmarks silo that was among the first to implement tags, and user-tagging (AKA folksonomy), and present a UI of popular tags. Pinboard acquired delicious in 2017. Starting 2017-06-15 the site was put in read-only mode and delicious users were given the option to migrate to Pinboard or export their bookmarks. 

History

 * 2003 – Launched as del.icio.us
 * 2005 - Acquired by Yahoo
 * 2007 – rebranding as Delicious, new domain http://delicious.com
 * 2011 - Acquired by AVOS Systems, YouTube co-founders
 * 2014 - Acquired by Science, Inc, former MySpace executive
 * 2016 - Transitioned to Delicious Media, new company of Domainersuite and Science, Inc.
 * April 2016 – switched from delicious.com back to del.icio.us domain.
 * 2017 - Acquired by Pinboard

How to export your data
Export was an available feature for portions of the product's life, but not under others. In particular, during a long stretch of 2016-2017 under the Science, Inc. ownership, export was not available. Science, Inc. promised the feature would return, but it did not under their ownership.1



As a result of the inability of export, at least one developer wrote a script to allow a limited version of export.

Following the acquisition by Pinboard, it was promised that the data export feature would be turned back on before the website was frozen on 2017-06-15 at which point no new bookmarks would be allowed to be created.

2017-06-11 The native export function on the site was finally re-enabled at https://del.icio.us/export.