Okay, here's an idea. You keep a blog on some topic, call it widgets, and your blogging service has email notification of new comments.

In your clew, you have a resource node for the widgets blog at /csnyder/widgets/log.

Now, tell your blogging service to send all new comments to comments+log+widgets+csnyder@clew.example.org -- they won't be threaded, but they will be in the system. Oh, and you could probably abbreviate that email address to node5682@clew.example.org.

Cheers!