Sometimes claiming a certain altcoin after participating in their airdrop and bounty requires fee in adding such coin to your personal wallet,after doing a lot of social tasks,and we newbies have no token in wallet,this resulting to forfeiting of coins. Please why fee on such wallet?
Never ever send ETH to a bounty manager to cover as fee for a token to be sent to you. It is usually scam. If a bounty manager or project cannot even afford a few for bounty distribution then it's a useless project. They are sending you worthless tokens that have no value.
Always report such projects to scam accusation board if they haven't paid your bounty and bounty managers will be summoned to explain their actions.
However, if you are planning to transfer tokens to an exchange, you need to have some same fee in you Ether wallet/metamask.