MediaWiki:Abusefilter-linkspam
Due to heavy spamming, posting of links is blocked for new users and not registrered users.
I apologize for any inconvenience this brings, but due to the rampart abuse of this site, and very few legitimate edits involving external links, I've disallowed posting of links for all accounts that are less than two days old.
If there is a legitimate reason for adding a link, swap the first t's with x - like hxxp://example.com/ - and one of our users can review and update it to a proper link.