I placed a couple of bets and I have some initial suggestions.

1) On active bets under "account", display the resolution date, so that we can quickly know when the bet is settled.
2) Display both the value at bet time (which is the amount the user risked) and the value if win, without having to click the "Action" button
3) Display the actual odds at which the bet was placed. Now in order to see that, I need to divide the two values.
4) I still haven't found how I can "cashout" a bet before its resolution time. I think it needs to be somewhere clear.


Edit:
One of the events where I bet finished more than an hour ago, but the bet still hasn't been graded. I take it grading is performed manually rather than automatically? If yes, this is the biggest change you should implement. The MOST important things to bitcoin gamblers are fast deposits/withdrawals, high limits and fast grading of bets so they can re-bet.