To answer, when new members make posts with links, they're automatically moderated, and a moderator has to come along to approve them. After around... 10 posts, I believe?... this issue is henceforth resolved and you can post links normally. That said, I'll look over your post and approve it if everything is in order. Next time if you have an issue with your posts, you can contact me or any other moderator directly, and we'll be able to help you out more quickly.
Lastly, welcome to SP! :D