Ranked in these QuestionsQuestion Ranking
Pro A variety of exchange rates
Use Bitstamp, Coinbase, Kraken, BTC-e, BTC China, BitcoinAverage, or modify by percentage points (one hundredth of a percent).
Pro Allows watch-only addresses
Monitor how much funds other accounts have, even if you aren't planning on spending anything.
Pro GPS-assisted local Bitcoin trading.
See who wants to buy or sell Bitcoin in your area, view their reputation score, and view their asking price.
Con Mandatory transaction fee
The transaction fee is .0001 BTC or 6 cents.