I would like to add few more earning methods from my end:
1. Services:
In this section, members post bounty options for those who can help them either in programming or any other task (eg: a signup on a website, forum posts and so on). This job can get a person earning irrespective of his account rank.
2. Digital Goods/Goods:
Here the members can sell their digital goods like gift cards or physical goods and earn BTC. A simple a safe method.
Also in the Faucets section, kindly write that it's a low earning method. Also if possible, rank the options as per the earning capability. I feel Signature Campaigns pay higher than the other options but that's my POV.
Would you recommend always using escrow when selling gift cards and other goods?
Not exactly as an Escrow also can't give a guarantee that the gift card may be valid after a week/month. It does happen that gift cards work when they are purchased but get cancelled after a period of time. But for NEWBIES only, it's better to use an escrow for a digital gift card to make sure the newbie doesn't get scammed and the buyer as well gets a working gift card.