It sometimes occurs to me that
text-decoration: none makes the edit link difficult for some visitors hard to identify. On more than one occasion, a comment pointing out the link has resulted in a better question.
As I type: Do the sentences have the same meaning?
(EDIT: Not an exemplary outcome, but proof of concept at least.)
Is it fair to assume that there are many unreported instances of this event? That is to say, I assume that there are many instances in which the poster, without prompting, fails to expand or edit her question (in response to a comment, for instance) only because she doesn't recognize the grey links below her answer.
Obviously, this is more likely to be a problem for those at the very beginning of their study. Would not an obvious and unmistakeably buttonish element increase the number of edits by questioners?