Trying to find webmaster for seniors-site.com. Whois lists contact info as private. Site has post on it with my name. Did not post to this site though it must have come from some where else. Desperate to have name removed.

The ICANN Registrar is ENOM, INC. It is also the host for this website. Contact information can be viewed on this page: eNom - domain name, internet services, dns hosting - ABOUT/CONTACT US (http://www.enom.com/aboutus.asp)

Also when you say post with your name. Is it your real name or is it screen name like pretty in blue.
The issue is that first if it is a screen name, there are most likely 100's of people using that screen name in varoius places. There are many Fr Chucks for example on many other sites, I can not stop them from using that name on other sites, and there are at least three people with my exact real name, so if they post, it will be with the same name.

So I truly doubt if someone is merely using a similar name, you can do anything about it, unless they are claiming to be you.