I'm working on a social RSS reader website, and with the news that Google Reader is shutting down, we'd like to capitalize on that by providing a feature for users to automatically import their Google Reader feeds in the same way that they might import contacts. I can't seem to find a good API for this.
The one solution I found, sending a request to http://www.google.com/reader/api/0/subscription/list, doesn't work, because we have to be authenticated to receive results. This means that either the user sends their google accounts password to us, obviously unacceptable, or we do the request client side. However, that API doesn't seem to support jsonp, and so we're unable to do a cross-site query.
Does anyone have any suggestions or links I've overlooked?