Ask HN: Why is wikidot.com blacklisted?

I tried to post two text on HN, but they did not appear. As I checked later, it is probably because two are on my sites at wikidot.com. Is there a possibility to bypass it (more civilized than placing texts/redirects on a different domain)? FYI: One on Open Science and Science 2.0 and the other on gifted education (read: teaching geeks).