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Notes that are only visible to people looking at a certain address on a certain website, nowhere else. I truly do not think this it at all newsworthy.

"Public notes" are a construction of blockchain.info—despite the confusing name—they are most certainly not part of the actual Bitcoin blockchain.

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Bitcoin does have the ability to store this kind of information in the actual blockchain, but blockchain.info decided it was not worth the bloat.

http://bitcoin.stackexchange.com/questions/7864/is-a-public-...

That's incorrect. You can shoehorn your data in, and blockchain.info tried for a period, but removed it when it drew the ire of almost every core developer. It just wastes space and bloats the unspent outputs database.

Good to hear. Bitcoin already occupied 5-8GB last time I fired my client up, many moons ago.

13GB with indexes now. If it's an issue, just use an SPV client like MultiBit that doesn't store the blockchain at all.

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