Honestly, I don't care about the yields as long as I turn in positive returns by the end of the month. And besides, odds and returns per bet are highly variable, so I could be incurring more losses vs wins but I'm still at positive ROI. I think yields are more important if you're gonna sell tips etc, and maybe > 3% are good?
actually not that true. u could be betting like 100btc but u gain like 0.1btc this month. your base is only 10 btc only. so by ROI it looks quite ok. but in actual fact that u need to bet up to 100btc for that little profit, it is very risky. so u actually bet big amount. u may be lucky this time or the next 10 month, but one bad luck u will risky losibng all.