I never understood how twitter and facebook campaigns worked around here.
How do they keep check on who posts when and how much to pay them.
Lol, who join these campaigns must post links to the their tweets or Facebook posts, it's very simple.
The rates depend the campaign, most common, average to find 0.01 BTC payrate for a week of service, posting once or twice a day, unfortunatelly there isn't many campaigns disponible at this moment.