- more-link is bad for SEO. Nobody will search your site with the word "more". "rel=nofollow" will not solve it too
- more-link is bad for usability. More-link does not explain what will happen if user will click on it. There is already link on title and more-link is an extra not needed element on page. If user cannot understand that the title is the link, than there is a problem in css-styles and not in html-template
- more-link haves no context. Users, search engines, screen readers or printed pages cannot tell nothing about the destination from word "more"
- more-link increase the size of the page. The page with read-more links will load a little bit slower. And also page will be crawled by search engines a little bit slower too.
Check out how stackoverflow works without more-link.