A lot of people submit "rate my startup" links. There are two ways to do this - either sumbit a link to the homepage with an appropriate title or submit a question-like post with the homepage link in the title and additional commentary in the text field.
In the first case, the author must add a comment the regular way which may not be at the top/visible the whole time. In the second case, there's no direct link to the homepage, one has to copy it or type it manually.
I would appreciate if HN would improve the UX with these kind of posts. I won't suggest a solution, I'm sure PG will come up with something clever if he decides to implement this.