Maybe a too newbie question, but I am running a full node for months, and there are at least 1,000 transactions flagged that I was the first to relay them... do you get any kind of "reward" for that?
Nodes generally don't get paid for relaying transactions. I'm not sure why blockchain.info reports who first relayed the transaction and their location.
It seems odd to me that you are hashing for a mining pool, but you don't know how it works. It might be a good idea to find out.