Referrals, Banners and 3/12 months free offer

[#1]

If a friend joins plusnet by clicking on a banner rather than going to http://www.plus.net/refer and entering  the offer code 'refer3 do they/I still get the three months free, or can this be worded into the banner text, please.

[#2]

Unfortunately not, this would just allow the referrer to accrue credits for the referral as normal.

[#3]

Not much point me having a banner on my forum to advertise PN then, I might as well remove it!