If you are occasionally getting duplicate messages, then it's likely happening when someone replies to one of your messages, and sends the message to both you and the list. You'll get one copy directly, and another one a few minutes later via the list. If you are getting every message in duplicate, then it's probably because you are subscribed twice. E-mail me and let me know, and I'll fix it. If you are seeing duplicate messages in the digest, it's probably not real duplication, it's probably that people are quoting previous messages and it just looks like duplicate messages. If you're convinced that the digest really has duplicates, let me know and I'll look into it.