[pycal]

One of the things I found surprising and curious about bitcoin is that the minimum viable amount is actually the transaction fee, which is maybe around 27,000 satoshis (median tx size x 120 satoshis/byte).

The surprising part for me was that, as a corollary to that, wallets with less than that amount have bitcoin in them which is potentially permanently removed from the total supply of BTC.

[biggerfisch]

Well, you can send zero fee transactions, they'll just take a while to get through, depending on the current size of the mempool. And you can also always send transactions from multiple addresses, meaning you can add up these small amounts to something more meaningful

[rtkwe]

Will zero fee transactions ever get confirmations? They'll be the absolute last thing any miner includes so unless there's nothing else I wouldn't expect them to get any confirmations.