Do you know what would happen if we let 1 person post a referral link (Note: A referral link is acceptable in a very rare case of a very constructive post/thread/contribution/other; but I'm going to disregard this now)? People would start posting their links not just in single threads, or sections, but everywhere (Note: We can't let a single person do it; it's everyone or nobody). Once that starts, they start using more accounts to post even more -> Spam. This is a chain reaction. Referral links are useless, IMO they should be disallowed forever.
Sig campaigns are even more useless. Why are they being allowed here?
Going by your agreement, everyone who creates account on this forum would surely be creating multi accounts just to spam their referral link(s) needlessly on all posts every where on the forum?
If you guys are so afraid then why not divide the Services section in sub forums? One of that section dedicated to where posting referral link in OP is allowed but it's not allowed anywhere else ?