STOP adding 100 miles or any extra miles at all when searching for meetups. I don't want to know about meetups in a city 100 miles away!
I wish meetup would give us the option to match mileage exactly as we set it rather than add 50 - 100 miles to show us meetups in another city. I have no interest in traveling 100 or 50 or even 25 miles to attend a meetup!
I would like to be able to search as much as 200 miles, as in my sparsely populated country, we are willing to travel for up to 3 hours for some Meetups. The carpooling/ridesharing road trips are often more fun than the actual Meetup events! ;-)