Jutta has created a channel on http://topicexchange.com/ where you can send a ping when you write an article about a new blog. It would certainly be nice if the usual suspects now update their software and send trackback pings to it.
The channel can be pinged at http://topicexchange.com/t/blogs_deutsch/ with trackback. Users of the Python Desktop Server only need to enable the channel in the settings under the Topics page. If you want to subscribe to the channel in your aggregator, you can do so using the address http://topicexchange.com/t/blogs_deutsch/rss.