It's posted in "Friends of the Unofficial Google Reader API"
and he says: "I realize that we're using an unofficial API, so we have no right to complain about any changes to it (instead we should be thankful to have been able to use it for so long). But at the same time, the Reader team is well aware that developers such as myself are using their API in our software, and some of us rely on this software to generate an income."