Allowing anonymous users to submit tickets on trac?

As you know, common-lisp.net has made Trac available for bug-tracking
(among other things).  Currently, to submit a bug report, you have to
have an account to login to create it.  

This puts a fairly high barrier for bug reporting.  The reason for
this was that just after Trac was made available, there was a lot of
spam in the ticket system.

However, it is possible to allow anyone to submit reports, as before.
What do users want?  I certainly would like anyone to be able to
submit reports without having to get an account, but I also don't want
to deal with spam.  Currently, the spam is (manually) marked as an
invalid ticket so unless you go out of your way, you won't see it.

What do you like to have?

Ray