I was thinking why these forums don’t allow us posting links is it illegal because throughout the forums there are lots of links how do these people get to post them
in this site is there a minimum post margin to posting
Because this forum doesn’t exist to advertise your wares. It is here to allow for an exchange of knowledge in the are of web design and development and all the sundry related topics.
Unrelated links are only allowed in signatures, which become available after you’ve been a member for 90 days.
All these topics and more are covered in the FAQ/Rules page: http://www.sitepoint.com/forums/faq.php