Read well, from their site (perhaps check yourself to be sure, use the link):
You may terminate your account by discontinuing your use of the Site, or by sending a notice of cancellation to: eHarmony, Inc., Attn: Cancellations – Content & Community, P.O. Box 60157, Pasadena, California 91116. In all cases of termination, we will only remove your user profile, and not any content you may have contributed to the Site.
Doubtful if this site belongs on the grey or black list. Perhaps ‘very dark grey’.