Guests will no longer be able reply to topics. From now on, in order to start a new thread or reply to an existing topic, you will have to register and provide a valid, verifiable email address.
Since I began allowing guests to posts, the board has experienced heavy spamming. This change will virtually eliminate the spam (with the exception of those who only wish to promote their crackpot theory website. They'll still post, and I'll continue to move them to the proper category.)
Keep in mind that I DO NOT sell or rent or give out email addresses. You can open a hotmail account soley to give to this board if you want. I don't care. The only reason I force verify email addresses is to cut down on spam.
Chemists are physicists who don't do math.
