So due to spam, new members must spam in the newbies forum, before they are allowed to write meaningful responses elsewhere? That makes perfect sense to me.
They figure true spammers dont have the time
(thats 1 post for me... 4 to go)
Already has 18 post, yet still a Newbie 
I guess you will be a newbie until you have 50 posts.
If its 50 posts then people will just post rubbish to get off the newbie list. BTW, just like I'm doing here.
Luckly it only 5 posts now... so 3 to go