Coin.mx is an Internet cryptocurrency exchange that was originally founded by the Collectibles Club.
The exchange allows customers to purchase bitcoins with cash, credit card, bank transfers, wire transfers and ACH transactions.
Recently the company has been sending out emails to end-users offering to pay them in bitcoin for positive reviews of the service posted to reddit.
Multiple users took to reddit to share emails from the exchange encouraging the review spam on reddit.
Reddit has a strict set of policies and rules that disallow this sort of vote manipulation or incentivized content.
This sort of “astroturfing” is often frowned up and disallowed in most online communities.
It is the belief of many individuals in the bitcoin community that Coin.mx is attempting to pump itself especially on reddit after several reddit posts have gone viral with scathing reviews of the Coin.mx site.