"If you're currently displaying a Picasa referral unit on your site, you won't notice any changes to the unit or to the way that you have been generating earnings. For now, all Picasa referral units that are currently up will remain supported. However, we strongly encourage you to switch to the new Pack referral units at your earliest convenience. "

şimdilik kazanılıyormuş fakat pack birimleri çıktığı zaman onlarla değiştirmen öneriliyormuş

link: Inside AdSense: Picasa referrals roll into Google Pack