[Starson17]

Originally Posted by DarkElf

Is there a way to perform this sobstitution? Perhaps just in the skip_ad_pages method itself?

Perhaps, but I'd need to dig deeper than I have time for.

I've never needed skip_ad_pages, so I'm not familiar with it, and it's only used in two other builtin recipes I know of. I'm a bit surprised that you are finding this, as I would have expected it to have been seen in those other recipes.
FYI, here's the code for those other recipes:

Spoiler:

    def skip_ad_pages(self, soup):
        # Skip ad pages served before actual article
        skip_tag = soup.find(True, {'name':'skip'})
        if skip_tag is not None:
            self.log.warn("Found forwarding link: %s" % skip_tag.parent['href'])
            url = 'http://www.nytimes.com' + re.sub(r'\?.*', '', skip_tag.parent['href'])
            url += '?pagewanted=all'
            self.log.warn("Skipping ad to article at '%s'" % url)
            return self.index_to_soup(url, raw=True)

    def skip_ad_pages(self, soup):
        # Skip ad pages served before actual article
        skip_tag = soup.find(name='img', attrs={'alt':'Cyanide and Happiness, a daily webcomic'})
        if skip_tag is None:
            return soup
        return None

Whatever solution you find, post it here.