Poloniex was first exchange that took Monero. Well after the one that was i think just temporary made to host Cryptonote coins. Since was brawest they deserve biggest Monero volume. When Monero was accepted to Mintpal, everyone expected huge volume there, but it seems Mintpal users are more conservative.
Spam bot detected and reported - this one is copying our own Febo from 2014 (its cleverly cropped some of the text to avoid match detection.
See
https://bitcointalk.org/index.php?topic=753252.msg8561804;topicseen#msg8561804How clever is that? I mean the spammer and then the detector. Pretty impressive