There are now three different Salesforce meetups in the Columbus area, reflecting the explosive popularity of the Salesforce platform in Central Ohio.
The Columbus Nonprofit User Group meets monthly at Summit Technologies to discuss issues relating to Salesforce and the nonprofit community
The Columbus Salesforce Developer Group meets monthly at Summit Technologies to discuss topics relating to force.com customization and integration
The Columbus, OH User Group meets quarterly in various locations to discuss topics of interest to general Salesforce users.
All events are officially sanctioned and sponsored by Salesforce.com