You can add this sender to your blocked senders list (Tools| Message Rules|
Blocked Sender List), but that will not block future communication should
they use a different e-mail address.
--
Matthew
185/177/160
To reply by e-mail, heat things up a bit.

It really depends on the news service you use.   The one I use does block
much of the spam - so when people like you respond to it (and do not snip
your reply) you actually just repost the spam itself and do the job for the
spammer.

So - lesson of the day - if you feel you must respond to spammers - snip
the crap they post first.  :)

Otherwise - its kinda hard to block these spammers.   Putting them in your
blocked sender doesn't do much good - as usually their account will be
terminated pretty quickly and they just resend the spam under a different
address.  

The best thing to do is just ignore the posts, don't respond to them.  Or -
(without announcing it via a post) just take the spam post, view all the
headers of the message and forward it on to the originating ISP's violation
of TOS address.  (most are "tosspam@{ispname.com}" or "abuse@[ispname.com]
or something similar.)  In the case of this spammer, I'd sent to hotmail,
and supernews, and if you are real net savvy, you'd use a reverse domain
lookup on the website mentioned in the header, find the supporting
webservice providing the support and contact their abuse line as well.  

In essence - do your part in shutting down the spammers by reporting them.