MegaMoonLiner,
Aaron has it right. After 10 posts, you'll be able to put links into your posts....and it is due to spammers who slip through the initial approval by admins.
The "forbidden words" error is associated with the original post of a new thread. There is new software that the forum owner is researching for a work around fix. What is happening; when you write a long first post for a new thread, the forum software is automatically adding keywords at the bottom of the thread. Well, the forum software is reaching the limit of keywords allowed and giving the error to the member trying to start a thread. The only work around for the keyword problem is to keep the first post short.
As for the links...four more posts and you can include them in your posts soon.
Welcome to the forums! Head on over here and introduce yourself if you haven't posted yet:
http://www.papermodelers.com/forum/welcome-desk/