If you buy premium - which isn't a one-time-fee - they'll start sending you fake spam, as soon as your "subscription" expires. I get like 5-6 spam mails every day, and NEVER get anything but those peculiar looking spam mails, which ALL are "dead linked". Not one single spam reaches any real deals, real products/real companies.
I am 100% sure this is "Bestwebsoft" and their way of trying to keep customers. Who else would all suddenly benefit from sending spam without any opportunity to actually make a deal? I say: Avoid these scammers at all costs.