Action Squad. I grew up on the East Coast, exploring solo and never knowing that there was a community built around it. I get to college in Minneapolis in the early 2000s, and one of my dorm mates introduces me to their site and invites me out to a well-known brewery (now my profile photo), not knowing that I adored exploring.
I learned exploring ethics from them, which carried me well when I discovered this forum. Action Squad's explores might not be the most world-renowned or impressive. But they have a special place for me because their location database and influence changed my course - going from solo explore the first half of my life to the awesome community aspect in the 2nd half.
Pic very much related.