I've just released an update to https://donut.dance including:

No deposit limits

The 1,000 donut deposit limit has been lifted!

Withdrawal rate limiting

Withdrawing to ERC-20 donuts costs me gas. It'd be easy for someone to create a bot to drain my ETH. In order to make sure the amount of gas used isn't abused, I've implemented withdrawal rate limiting. You will now only be allowed to withdraw to ERC-20 donuts up to 10 times per day. This will ensure I can continue running the service while I still try to figure out what to do about costs long term.

Withdrawals to Reddit are still unlimited.

Improved privacy

ERC-20 deposits now use a unique, random identifier per-deposit. Before this change, a static account-level identifier was used. This would have allowed someone to associate two different Ethereum addresses with the same account by looking at deposits on the blockchain. Now every deposit uses a unique identifier, so if you deposit donuts from multiple Ethereum addresses, your addresses won't directly be associated on chain through just the deposit information.

Better stability

I improved how ERC-20 withdrawals are being processed. It may take a little longer to broadcast transactions, and unfortunately the dashboard can't show you the transaction hash for your withdrawal immediately anymore, but it'll be more robust and won't suffer problems from using an incorrect nonce.