I always opt out of arbitration clauses (you should, too--look it up). Doing so is usually not onerous.
Airbnb's new terms of service update their arbitration clause (and they warn about it twice in the description, here: https://www.airbnb.com/terms?eluid=1&euid=560dc653-8b94-aba8-c5b4-9a19bc20d7a7).
I scroll down to Section 34 and find the part that tells how to opt out, and I read this:
"Changes. Notwithstanding the provisions of the "Modification" section above, if Airbnb changes this "Dispute Resolution" section after the date you first accepted these Terms (or accepted any subsequent changes to these Terms),..."
Yep, that's me.
".... you may reject any such change by sending us written notice (including by email) within 30 days of the date such change became effective, as indicated in the "Last Updated" date above or in the date of Airbnb's email to you notifying you of such change..."
Okay, that's pretty standard. But how do I email you? ... Anyone? Anyone? I shouldn't have to send registered mail for something this simple...