herlo was asking in #fedora-devel about consuming fedmsg messages from FAS. He pointed out that while there is documentation about consuming messages, there's also a lot of stuff going on. Most importantly, an introduction to the workflow is missing.
So, here's a tutorial I made in response that should walk you through it. Its a little verbose and a little rough around the edges (the line-wrapping gets wonky in places) but I think it will still serve the purpose. If it raises new questions or comments, please bring them up in the comment thread here, on the messaging-sig mailing list, or in #fedora-apps on freenode.
Static files created in that tutorial can be found in and downloaded from this gist.