* The tools are nowhere near adequate to handle this amount of people, and more geared towards small groups
* However, there is NO way to switch: Your data is locked in with Meetup: There is no export or even access to the data of 'your' members.
* You can't just cancel a group: If you stop paying (which I did with a smaller group), it's offered to all members. All it takes is 1 spammer to pay, to spam all members. Basically, we are forced to keep paying for our group for years.
There is a big opportunity to build a better service here, but switching from meetup will be a pain.