>There are a number of reasons to keep one's anominity.   In the past if
>I wanted anonominity I would work under a pseudonym.  Oh, if someone

You list some good reasons.  But whether or not to restrict anonymity
services, cryptography, steganography, etc. is not simply a matter of
listing benefits of these technologies.  Rather, it is weighing the benefits
of those technologies against the burdens imposed.  And right now, the
burden of terrorists having secure communications seems pretty heavy.