Is there really any benefit in doing this? I don't think the reason you gave has any incentive to implement this suggestion.
Referrals on Sythe, not RuneScape..I think what he's trying to say is, people who are creating new accounts and making them members, ESPECIALLY with the new update with the trade restrictions and such, people can use these people to get the extra skill training boost and maybe offer them some cash while doing so.
RuneScape players can use the RuneScape website to send up to 50 invitations by email each month. If a friend subscribes within 14 days of creating their account, you will receive a 10% boost in any XP gained for 7 days!
Share the provided referral link on your own website, blog or social networking page to invite as many friends as you wish.
Activate up to 5 XP boosts over the year from when the first one is activated.
Player should saids Posting creates a new account soon.
So someone could pm him and ask his E-mail.