Where did you link to them from Frederick? I appreciate what you are trying to do, but I'm not sure its the best way to go about it.
To clarify a bit, I bet most or all of the people you linked to would prefer a link contained in a
SEO content page that is on your site. They write the page, you put it on your site matching your site format.
For the Erin Writes page for example, IMO it would be best if she writes a page for her site as a landing page, and writes a page with a link to her landing page that you place in a copywriting section or page on your site.
That way you have a relevant content link going to a relevant landing page.