domain appearing in lists on very strange pages

could this be a target list for hackers?

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I have been watching my domain names through Google Alerts and prior to one of the sites being hacked I noticed that the domain name was appearing on some pages that look like post results from some sort of board system.

The links show up in blocks of text similar to:
Post N284: the new war sick nick91, 21:28 Top Site: domain.tld; domain1.tld; domain2.tld; domain3.tld; domain4.tld. Post N89393: nick coat of arms573, ...

Since the last site was attacked I have added many new filters via htaccess, but I still want to know what this type of page is for and what are these people up to.

Has anyone else seen this with their domains and can you give me more information?

I'm a little more worried about this one because of the text reading "the new war sick..." where most of them said something like "my favorites..."

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update... another site attacked through an old phpMyAdmin install. Make sure your host is up do date.