They recently acquired Meetup as well [1]. This doesn't bode well for its future. [1] https://news.ycombinator.com/item?id=38953242
Speaking of, is there a good replacement for Meetup if you just want to organize some informal activities, like a user group or going biking?
When I lived in SF, I used Meetup to start + run OpenLate, a tech meetup with a few thousand members. Not having access to member email addresses was the worst part of Meetup, and it's probably the main reason the site still has users. (Data portability is a big focus of Booklet).