Spamvertising is the practice of sending E-mail spam, advertising a website.
Most legitimate website providers do not tolerate this practice, and will delete any site that has been spamvertised.
Spammer's rarely, if ever, send their advertising email from the same server as the website they're advertising. It's almost always sent from "someone else's server".an email sent from someone elses server and in that email someone mention link to a website hosted on my server i dont feel like solid reason to suspend site that dont look suspicious.
It doesn't matter whether the contents of the website are legal/legit. If they're advertising a website that is hosted on a server in the US by sending SPAM emails then they are violating the US CAN-SPAM law which is illegal.i did not found anything illegal on that website.