Just a question with min. 100 mbtc bankroll, does that mean I have to bet 100 mbtc every bet or what? Sorry I don't quite understand. I am actually interested in participating here.
Those 100 mBTC refer to the minimum bankroll participants will have to start the competition with (in other words, how much BTC they start with, and from where the BTC for each bet is "deducted" from; with the expectation that: that amount will have to last for the whole competition, and that they will ideally end up with a higher bankroll than they started with).
Now, as mamansuherman was getting at, that doesn't mean you have to bet with that whole amount each time - in fact, the stake for each bet must be between 1% and 5% of your current bankroll (the amount of BTC you currently have), as described in the Main Rules 4, and 4.1 (the specific amounts might change for the next round, however).
By the way, let's use the Discussion Thread
1 instead, and leave this thread only for participants to post bets in.
1 -
https://bitcointalk.org/index.php?topic=1256522.0