It's obviously a shady behaviour. They keep changing their campaign rates only in 1 or 2 days after it started. At first time they make an announcement for very high pay rates (up 0.05 btc in a week) then changed the thread by created  new one but with lower pay rates (in USD)

Edit : how could he hired a newbie account as their campaign manager while they have hired a legendary member? Forgot the name. Well, his account got negative trust from yahoo now.