Popular Digital Currency Applications
Blockfolio -- a bitcoin and altcoin portfolio application available on both Apple iPhone/iPad and Google Android devices. Highly recommended by this website's author!
Delta -- another bitcion and altcoin portfolio application available on both Apple iDevices and Google Android.. Claims to support over 2,000 different cryptocurrencies!
Cryptocurrency News -- One of the better news aggregators on all things cryptocurrency. Available on Android.
CryptoNews -- another very good news aggregator application.
Resources
Where to spend your digital currency?
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Microsoft.com accepts bitcoin for Xbox and Windows store purchases.
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Virgin Galactic accepts Bitcoin for space tourism. In fact, you can get a ride to space for 98 bitcoin!
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Save The Children accepts donations in Bitcoin.
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Gift Card distributor eGifter accepts payments in Bitcoin. Use to shop at Amazon or other merchants!
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Domain name provider and SSL certificate provider NameCheap.com accepts bitcoin.
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Wikipedia.org accepts donations in Bitcoin
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Automobile manufacturer Tesla accepts payments in Bitcoin
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Computer hardware reseller NewEgg accepts Bitcoin payments.
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The Litecoin Foundations list of merchants accepting Litecoin
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The Dash website has a list of merchants currently accepting Dash currency.
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KLOTR.COM, awesome LED cryptocurrency-themed keyrings. Show the world your support for your favorite coin and pay with crypto!
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Procure some cryptocurrency-themed art from Kirk Dunkley studios!
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Popular non-exchange websites
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Bitcoinwisdom.com - tracks some large exchanges and popular currencies. Provides readily available historical charting.
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Coinmarketcap.com - Find out how much the currency you've invested in is really worth!
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Shapeshift.io - Trade your non-bitcoin digital currencies to bitcoin for a fee to be able to pay vendors that only accept bitcoin. Does not require creation of an account.
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CoinSwitch.co - Aggregates global trading platforms to give you the best cost when exchanging one cryptocurrency for another.
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Decryptionary - another web site similar to Coins Demystified that aims to explain cryptocurrency technology in the simplest terms possible
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CoinScannR - Price at-a-glance, along with all-time-high ((ATH) price listing for most cryptocurrencies.
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CryptoIndex - An excellent resource with tons of information on over 1000 cryptocurrencies.
Cryptocurrency News Sites
Popular Wallets
Hardware (I can NOT stress enough how important it is to invest in one of these!):
Software:
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Coinomi - a wallet for multiple currencies available on Android and IOS
Other:
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Make your own paper wallets for Bitcoin, Litecoin, and Dogecoin.
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Another Paper Wallet Generator for multiple currencies
Political Activism
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Coincenter.org: The leading non-profit organization focused on the policy issues facing cryptocurrencies.