Oh, thank you both for the sites. If BitcoinChain.com and BlockTrail.com (and my full node) all still know about my no-fee transaction then are the miners still being told about it? It would be great to be able to see the mempool of the miners. If my no-fee transaction still has a chance of going through (even if it takes many days) then I am content. I see at
https://bitcoinfees.21.co/ that at least some no-fee transaction appear to go through (is that reliable/accurate/up-to-date?). Can anyone point me at a recent no-fee transaction that did indeed get committed?
The last time I sent a transaction similar to yours (it looks like you are trying to combine smaller UTXO's into a bigger one), it didn't confirm. So I zapped the wallet transactions to stop it rebroadcasting. What would happen, is eventually another node would rebroadcast the transaction after a week or even a month. Eventually I zapped the wallet transactions again, waited a few days so the majority of nodes would forget it, and then sent it again with a fee.
What was happening, is that although my transaction qualified to the rules to be sent as a free transaction, other incoming transactions with higher coin age and value where pushing it down the priority queue for space in the block reserved for free transactions.
This free transaction space has now been dropped I think, and the core developers are removing the code behind the coin age prioritisation.
Your node itself might stop broadcasting the transaction when the coin age requirements for a free transaction get higher. Once the free transactions prioritised over it drops, it will start rebroadcasting it again, only to find more free transaction of higher priority are being broadcast. So it stops broadcasting again.
Unfortunately at the moment, we have to pay for the privilege of combining our smaller UTXO's into bigger UTXO's because the blockchain is full. It is worthwhile though, as escalating transactions fees could leave small UTXO's unspendable.
There are plenty of pools paying out 1mBTC payments or lower still. These people will be in for a shock when they try to move it, as the transaction fee is going to be a very high percentage of what they think they have got.