It's not required, but it's a nice gesture. Here’s a meetup article about how to add and remove sponsors on meetup.com. Our sponsors are always changing, so be sure to keep them current. Please add Hackster’s logo. (“Hackster.io is the place to learn and build hardware!”) We also have monthly sponsors, and it wouldn't hurt to give them some love too! Of course, make sure you give your local sponsor some love too if you have any!