If there's ONE thing I've always wanted from blog.wikidot.com, it is most definitely to receive 5 RSS copies of every blog post. Thankyou for enabling this feature!
Now if I accidently delete one of the blog posts in my RSS feed application, I don't need to worry, because there are 4 other copies!
Actually, I think this is a problem if you type in the custom domain rather than a 301 redirect. I haven't had duplicate RSS entries of my blog, except when I typed in a custom domain for wikiturf (rather than 301 redirect).