Earlier quoted context omitted.
What if I post a Spanish story to HN (or Reddit) and use the title of the article as the submission title? Will the company hosting the site have to pay up?
NO, because neither Reddit nor HN operate in Spain, and therefore are not subject to Spannish law.
Same with consumer laws, those apply if I buy a product in other country. For example Spanish law says I can get a refund 7 days after the purchase, no reason required.
Yea, doesn't make sense and probably they can't enforce many of these, but that's how they are redacted. I would set the legal team on alert mode if I were Reddit/Twitter/Facebook/Menéame.