Ok thx for the answers, that happened just once that i got 1000 satoshis extra, maybe it is mistake by freebitco.in moderators because i didnt won on free roll or multiply game anything special and have only one refferal who is inactive.
The 1000 satoshi that you get from Freebitcoin is not a mistake, it is the free satoshi that Freebitcoin gives to members who have not been active for a long time.I am writting from the phone so i dont know how to post picture of that, my final winnings after match Bayern Munich- Borrusia Dortmund were 50 satoshis and that is official, but after that game i had 1000 satoshis more. Information about that i tried to find on my profile stats but i didnt find it anywhere. 
You can check on betting tab, and scroll down click "My expired bets" choose the sport event Bayern vs Dortmund scroll down again you will find how much you won.Can someone explain me when i place bet on particular game on freebitco.in why i am not receiving additional prize from the reward pool if i picked the winner bet? It says that the earlier bet was made, the higher share of the pool will be. I tried several times to contact their support, but never got answers on this topic
In my experience what you get there includes an additional reward (multiplier for early bettors).Just put your question on their ANN THREAD you will get more clear answer
Edited: this is the post from TheQuin about free 1000 satoshi https://bitcointalksearch.org/topic/m.53052562
It's the first time I ever heard such a thing. Could you share a picture of that? I think you are confusing with something else or you fell into a scam. Be careful if you received such a message from a social network or an email. Your prize pool share is included in your final payout, you can compute it by subtracting your stake multiplied with final odds from your winnings. 
