Poloniex is one of the most popular and well-known cryptocurrency exchanges. It has increased even more in traffic growth since the destruction of its rival, Cryptsy, in 2016, as well as the early-2017 altcoin bubble. This exchange has one of the best trading interfaces around, but doesn’t accept fiat currencies – so users will have to load up on bitcoin somewhere else before trading here.
Image source: steemit
Pros: Second best crypto exchange following Bittrex, allows margin trading, appealing interface
Cons: Reports of withdrawal issues, no ability to deposit traditional currency