Advanced mode gives access to partner offers, often referred to as "offer walls." These third-party services provide similar "get paid to" opportunities as those on FreeCash*, but sometimes with additional games or different reward challenges. Offer walls often use their own currency, like "coins," which are converted into your FreeCash* balance.
While offer walls can be a bit complex, I plan to dive deeper into them in a future article. Offers walls are available on a range of different "get paid to" sites listed in the PocketPounds "get paid to" bookmark directory, not just FreeCash*.