SIGs, cross-referenced by category
If you're a Mensan who loves sports, hiking, snowboarding, rafting, skating, running, biking, skydiving, you get the idea... This is the SIG for you! Join Active Ms to share ideas and experiences, and plan more active events for gatherings and local groups.
If you have your feet on the ground and your heart in the air, join Mensans worldwide for online discussion about all aspects of aviation. From professional pilots to those who just enjoy the ride -- everyone is welcome!
BLAMs (Blazingly Lightly Armed Mensans)
A non-political SIG for firearms enthusiasts.
Geocaching is a real-world, outdoor treasure hunting game using GPS-enabled devices and other navigational techniques to hide and seek containers, called "geocaches" or "caches", anywhere in the world. Meet Mensa members all over the world who like to Geocache. Discuss clever finds, solve puzzle caches, arrange Geocaching trips from gatherings and events, and more!
RV and Camping
A comprehensive online community for RVers, tent campers, and other enthusiasts of outdoor recreational excursions, with messages posted about all aspects of the lifestyle.