These apps and sites are easy to read, something crazy spikes, DOWN, something crazy dips, DOWN, too much traffic, DOWN.
Had a few LTC "get lost" in coinbase, and entire ETH "pending" in poloniex for 4 weeks. Insane, these guys put way too much on the line with a shitty backend system.
Yeah ive quit polo months ago and never looked back
What's your preferred exchange?