I've tried the new Path feature (via Publicize from Jetpack). The connection to Path worked and new articles are posted correctly (title and URL).
But the image is missing. I've read at http://en.support.wordpress.com/publicize/#images-in-publicize that the images should have a specific size and with the first try I used a perhaps too small image. But I think the image in the actual article http://www.pottblog.de/2013/08/15/elysium-dustere-und-sozialkritische-zukunftsvision-startet-heute-im-kino/ should be large enough, but it won't be shown in Path.