I some what agree and was lost to why I couldn't post. A lot of will come here from Google, read a thread and want to reply. So, we sign up, don't read everything, who does. Then be lost as to why you can't reply. I can see this slowing spammers down, but I don't see how it would stop them from create 100s of users, posting stuff in the newbie area and they waiting. Thing about spammers is they have time, spamming is their job...
unsolicited and paid advertising are two different monsters.