Type #bookclub into your favourite social media app and read 20 of the books reviewed

Possible ways to do this challenge:
- Pick the first 20 books found when you search
- Search regularly (eg, every day/week/month,) and choose a book posted since your last search.
              - or create a rule about                       how you'll choose a book -                 eg. first one seen, 5th one                   down.
- Search whenever you're stuck for your next read or remember this challenge exists.