How do I unsuscribe?

It very much sounds as if you have already Unsubscripted.

Though my understanding of TR only allows you to Unsubscribe from Publications that are sent to your In Box not TR itself. That however could be wrong as they have just instigated a Site Upgrade and things could have changed that I have not seen.

However if you are a Tech Republic Pro member you can always not pay the Subscription Fee which would have the same effect when you next get it. There used to be a Link on every TR Page to contact the Site but I can not find it since the redesign.

I suppose you could mark your own post as Spam and put a note with it to the Administrator with the question. Just left click on the Flag Tab on every Post. ;)

Col

You can also change your emails, but it should be enough to unsubscribe from newsletters.
When I registered I subscribed to many newsletters and found myself recieving to many updates.