I know it can be abused, but I suggest to allow anyone tip anyone any time, regardless of the balance. The current minimum, 0.00001 BTC, is okay in my opinion.
As for abusers, I think it's easy to spot such activity, and block their accounts.
What I lose and what I win playing on WinDice are approximately equal amounts. But I have fun playing and chatting, and that's what counts.
What I know about you is that you are going to win 0.0025 BTC soon from the "Weekly challenge: Crash test!".
No one can hit more than 19 greens in a row...
Normally Bitcoin supporters are against Ripple because it doesn't meet the criteria for decentralization. Ripple labs holds around 60 billion XRP(more than half of the total supply), and basically XRP holders can only pray for the company wouldn't dump it on the market.
This is something that would be nice to have, but as far as I know, no dice site has that feature currently. Even the ability to see the history of all your previous bets is something I can't see anywhere but on WinDice.
I almost never change my seed unless I'm asked to do so, or I want to check the fairness of an outcome.
Changing seed affects the numbers you get, but you can never know how, or, in which way that affects the outcomes beforehand.