Customizing save or moving a method for better design?

Damaris Fuentes wrote:

Hi you all, I have a "wiki_controller" which gets the page's title, summary, and content, stored them in a "Page" model However, I have to do a kind of parsing in the content to recover annotations made by the user, and stored them in the "Annotation" model.

Uh, why? Why not store raw Wiki markup in just one model?