Lars Marius Garshol has posted a proposal for a push form of SDshare to the topicmapmail mailing list. The need for this form of the protocol is explained in this blog posting. Thoughts and opinions on the design are very much welcome.
David Damen of SpaceApps has checked in the first version of Tropics, the RESTful web service API to Ontopia discussed here earlier. The README file has build instructions, while more in-depth explanations can be found in the TMRA talk about Tropics. The design document describes the interface in more detail.