From Read Write Web Community Group
The majority of today's Web use is focused on Reading. The Writing dimension remains obscure and unnecessarily limited, due to under-utilization of existing Web Architecture.
By developing some simple interoperability tests, we hope to encourage and expand utilization of existing features and functionality -- and thereby to increase the Writability of the already well-Readable Web.
Full RWW interoperability will take some time to define, and longer to implement -- but the first round seems clear.