Example for the free Odd or Even bet
If you posted on the bitlegit forum that you were guess Odd on Block number 443498. You would win as the total transactions was 2573.
It works the same way for the 1 in 100 faucet bet. But you must match the last two digits (73 would have been winning numbers from block 443498)
Pretty much a 100 satoshi faucet which i make you bet it in a 1 in 100 chance odds.