Skype finally updated their Mac client to support web presence status, so I could finally do some tests, fix some minor niggles, and do a proper release of my Skype PHP classes.
They also updated their developer docs, saying they had fixed all the errors, but its just not true! Nearly all the errors I reported are still there, so they took the doc down again ;^) Apparently they are considering my proposal for some fixed status IDs in order to facilitate automated testing of presence API clients.