Many Stack Exchange pages contain anchors (
<a> tags) with a
class attribute set to
question-hyperlink. There is an extra double quote after the class value. For example, on this very page:
<a href="/questions/167180/extra-quote-in-a-class-question-hyperlink" class="question-hyperlink"">
I first found it when parsing
<a href="/questions/28041/whats-the-range-of-magnetos-powers" class="question-hyperlink"">
Browsers don't seem to mind, but scrapers do. And there's stuff you can't get at with the API.