A data migration throttle that supports the incremental and reversible migration of web site customization data from a client-side data store to a server-side data store. Initially, each user of the web site stores customization data, such as the user's zip code, in a cookies file together with a globally...http://www.google.com/patents/US7143189?utm_source=gb-gplus-sharePatent US7143189 - System and method for incremental and reversible data migration and feature deployment