A Hidden, Almost Covert Blogger Channel

There is a simple way to use the comments on blogger-based blogs to communicate with a friend largely free from monitoring.

1. Set up. Exchange or generate a Google ID/password pair. The exchange doesn't have to happen over the net, it could be by a phone call or a physical mail. 
2. User 1 logs in and opens a comment on one of the many, many low volume blogs on blogger. (This is one, being connected with a beginning mystery author). He, she or it puts down part of the message and saves a draft comment.
3. User 2 logs in and edits the comment. He can either read and delete the comment or he can put his message in. If he isn't done with the communications, he saves the draft.

The reason I said he, she or it, is that you can automate the process. I suspect that an IRC channel could be constructed this way.