user153: Does this mean the transaction had to come from a Blockchain.info/wallet user (or perhaps someone using Blockchain.info/pushtx)?  Or could this indicate something else (e.g., a node from Tor even)?

user-1: Yes, It means blockchain.info broadcast the transaction itself. So it was either created using My Wallet, the merchant API or submitted through /pushtx. A live list can be seen here http://blockchain.info/ip-address/127.0.0.1
Mixer transactions are broadcast through separate nodes.

153: <p>Does this mean the transaction had to come from a Blockchain.info/wallet user (or perhaps someone using <a href="https://blockchain.info/pushtx" rel="nofollow">Blockchain.info/pushtx</a>)?  Or could this indicate something else (e.g., a node from Tor even)?</p>
 -1: <p>Yes, It means blockchain.info broadcast the transaction itself. So it was either created using My Wallet, the merchant API or submitted through /pushtx. A live list can be seen here <a href="http://blockchain.info/ip-address/127.0.0.1" rel="nofollow">http://blockchain.info/ip-address/127.0.0.1</a></p>

<p>Mixer transactions are broadcast through separate nodes.</p>
