Here is a list of sites that have been banned from HHR for one reason or the other. Upon being banned, the site will be added here with a brief explanation for the ban. If you wish to refute the ban, please contact us.
HubPages: We don't actually have anything against HubPages itself, but rather the fact that repeatedly the site is used to create article link farms for long-tail SEO efforts.
Squidoo: See HubPages above -- exactly the same reason.
Synotrip: At one point Synotrip members were good citizens of the HHR -- then something went terribly wrong. Repeated guideline violations, spammy submits, multiple accounts, etc. Warnings didn't help, banning did.