Warning about exposing anon id

[Matt Blaze]

Julf writes:
>There is one more option - use two separate sets of anon id's. This is the
>way anon.penet.fi Mk II is going to operate.

How will this work?  Will you have a separate name space of "heavyweight"
anonymous IDs for messages that explicitly ask for a psuedonym (like with
a password) and those that don't?  If so, that sounds like a nice solution.

-matt