Excellent! Just saw your post and the previous one about private messages.
Actually, I posted this article about private messages 3 days ago.

If I understood well, you integrated the encode/decode directly in eSteem application via javascript. That is great! Great ease of use.

Still one remark : it is not totally private as we can still see who is sending to who, when, and how frequently.

Also, do you know if this will be integrated in the website ? are you related to Steemit.com devs somehow ?