I found this lurking in the comment-spam trap:
We present oneself
Sending your message through the Contact us form which can be found on the sites in the Communication partition. Contact form are filled in by our software and the captcha is solved. The profit of this method is that messages sent through feedback forms are whitelisted. This method increases the probability that your message will be open.
Our database contains more than 25 million sites around the world to which we can send your message.
The cost of one million messages 49 USD
FREE TEST mailing of 50,000 messages to any country of your choice.
This message is automatically generated to use our contacts for communication.
Of course, this is the problem with spam: it’s so damn cheap. A mere penny apiece would mean a $10,000 bill for those million messages.