I've not been checking my account or the forums much recently, but just logged into iS to find that I have a credit balance of 10, not sure why.
I remember years ago being given 10 credits for starting as an Audio contributor (I think), and that maybe there was also some promotion running with an old referral system, but that doesn't seem to explain it.
Don't think it's a 'modern' referral, as I'm set-up to get $20 for those, and despite having several sign-ups through my links, officially I have zero referrals anyway.
Anyone else seeing an odd credit balance? Cheers