Zero Balance & Bounty Campaigns: What does this mean exactly?

[crypto-words]

Often bounty campaigns require you to have at least a small amount of Ethereum stored in your MEW wallet.
Others simply write: “We will not transfer your bounty tokens IF your account has a 0 BALANCE”.

My question is concerned with the semantics of this formulation – what does “0 Balance” actually mean in most cases? Does it refer to:
a) 0 Ethereum
b) 0 Ethereum AND/OR 0 other ERC-20 tokens

Because the MEW addresses I decided to use for bounties have 0 ETH, but I have some ERC20 token balance on those MEW accounts.
Would that count or is a balance in ERC20 tokens still considered a “zero balance” because of it has no Ethereum?

Many thanks for your comments.

[JoshuaDunnink]

also interested in this.
This being the first time I hear about this scares me a bit as I already have participated and am currently participating in bounties.

[crypto-words]

@dongamk: Sure, the ones that I use are:

1. Bitcoin Forum > Alternate cryptocurrencies > Marketplace (Altcoins) > Bounties (Altcoins)
2. Telegram group : t.me/bitcointalk_airdrop