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User submitted calendar events are one of the best ways to build and grow a community.
They create a sense of ownership and participation for your users. This can help them feel included in your mission. On the other hand, users who submit calendar events to your WordPress website can help you promote local events that you are not associated with.
As a result, the feeling of togetherness goes both ways, as this helps your users feel like you are part of the community as well. To top it off, since the events are saved in a calendar, it is easier to manage and everyone to remember about it.