eReplicaShop.com is a particularly persistent spammer, using image spam from zombie PCs and a large variety of domains. Most of these domains are registered to "Paul Gregoire" or a number of other aliases.. the smart money is that this is actually Alex Polyakov.
Unusually, the eReplicaShop servers are rented from fairly legitimate web hosts.. but bearing in mind that Polyakov is linked with phishing and money laundering scams it's quite likely that at least some of these services are being paid for by stolen credit cards.
Rule 3 of the Rules of Spam states that "Spammers are stupid". In this case, the eReplicaShop.com spam is particularly stupid as it often gets sent to abuse@ addresses. Most mail admins get really pissed off about abuse@ spam.. and this often leads to a satisfyingly short lifespan for the eReplicaShop mirrors.
If you do end up reporting one of these, it's always worthwhile to point out to the host that they might not be getting paid for the services they're providing. That normally gets a very quick response.