Speed! The success depends on how quickly you act on the data.
These leads are based on real-time behaviour. If you sit on them? Their value drops fast. Strike while the iron's hot!
Pro tip for agencies: You're creating a new problem for clients (they now have leads to monetise). That's actually a good problem... and your upsell opportunity. CRM integration, email marketing, Facebook retargeting. You become indispensable!