This is a list of Directories of various types. Included would be sites that serve as guides to the Bitcoin ecosystem, for example. Also included would be services that match local Bitcoin users who may be willing to meet person-to-person to exchange Bitcoins.
Bitcoin Charts - The price of bitcoin across exchanges.
Buying / Selling Bitcoin
Gemini - Regulated US exchange.
Local Bitcoins - Buy and sell bitcoin with other people.
Lawnmower - Buy bitcoin with spare change.
BitPay - Accept bitcoin for your business.
Coinbase - Accept bitcoin for your business.
Uphold - Use bitcoin without being exposed to the volatility.
BitWage - Bitcoin payroll and international wage payments.
Preev - Price conversion calculator.
Bitcoin Sourcecode - BItcoin is open source.
Purse - Buy anything on Amazon with bitcoin and get a discount.
Fold - Get a discount on Starbucks coffee with bitcoin.
Gyft - Spend bitcoin at over 200 retailers through Gyft.