Paypal uses fiat as the currency and that means that there will be more people accepting Paypal than Bitcoin. The higher acceptance rate of paypal would mean the ease of use of it. Even though the adoption rate of Bitcoin is increasing, it is still relatively hard to find merchants accepting Bitcoin, especially in brick and motar stores.

Electrical price isn't an issue, global warming is. With most countries using coal and natural gas as the primary source of energy, the Bitcoin mining industry can make an impact on the environment. Governments can try to reduce the profitability by introducing taxes for electrical bills. POS is not a suitable replacement as far as I can see; there is simply too much ASICs built solely for mining Bitcoins and SHA256 alt coins, changing Bitcoin to POS is extremely hard or impossible.

MicroSD cards are much worst due to the size and the cost of the storage. The size would be a problem since it would be hardly visible in most situations and you can easily break it. MicroSD cards can be much more expensive than flash drives while being less convenient to connect to your computer/devices.

Signature campaigns. You need to build your account to a full member for higher and reasonable payments though. You have to be fairly knowledgable about Bitcoin related stuff. All ad campaigns here are targeted towards Bitcoin/Crypto users.

Manipulation is possible yes but unlikely. Satoshi haven't moved any of the coins which could show that he may have forgotten the private keys. Bitcoin lost isn't an issue to the supply, it can be divided further than satoshis if there is even a need to.

Bitcoin markets aren't regulated and exchanges can potentially just manipulate the volumes like what the willy bot in mt gox used to do. The price is determined by how much the sellers are willing to sell at and how much the buyers are willing to buy at.

No idea why I didn't find this. But heh, never too late.
 My address: 1K3C6vnytBYRdcKe3QRuxZQTCQZoT4iD7U

Go to your data directory, delete the file with .lock extension. It should solve your problem.

Do you have these lines in your bitcoin.conf?

I don't think blocktrail allows users to control any of the keys. For optimal security, the user must control at least n-of-m keys and the service must control less than n. This prevents the service from hacking any of your coins. Trezor is too expensive, Ledger HW1 is a cheaper option.

Best way is via signature campaign if you have lots of knowledge and free time. There is little difference between digital goods and physical goods. Digital goods takes less time than physical goods to deliver and is hence more convenient when selling it. If you're selling it here, consider using escrow for both.

Macro is the manager of this campaign. I guess Macro asked MZ to help to refill or MZ is Macro.

Myceilum has recently released a cheap hardware wallet. https://www.indiegogo.com/projects/mycelium-entropy It sounds promising and it is pretty cheap.

faucet pays small amount of btc per claim, it is generally a waste of time. you can get much more btc in signature campaigns.

spidergoat3

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spidergoat3

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spidergoat3

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