On
http://zergpool.com I want to mine only Pigeon (Pigeoncoin).
But this program mines not only Pigeon (x21s), but also Ritocoin (x21s) and GlobalToken (x21s).
I don't like that.
You need to read pool manual first. To mine pigeon on that pool, add
c=PGN,mc=PGN to your password. Anyway, there was a bug on pool, and some accounts were mining another coins. This is not a problem of miner.