Hi Darklordchris,
Posts
If you have under 3 posts, and try to post a link or email address they will be automatically sent to the moderation queue.
Signatures
You must have 25 posts to be able to have a signature.
Content Forum
The content forums which contain the Electronic Theory, Electronic Projects, Electronic Books, etc require 25 posts to create new threads.
Articles
The Articles section of the site require 25 posts to create new articles.
I hope that helps.
Regards,
EM