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I've looked at ADVrider and read enough to know I have no interest in that group.
The issue with ADV is the same as any forum, you're always going to get a cross section of folks.. Good and bad.. And with ADV, there's 10's of thousands of users. I've personally met some great friends at gatherings through there, but unfortunately I've met people who aren't only jerks online, but in person too..
And I've been a member of a LOT of forums, and a moderator/administrator of a few, too.. It's tough to balance a forum.. One will have too few people with no info, and the next one will be over populated and have undesirables who do nothing but want to cause issues.
As I've always said, I love a forum that acts like a bunch of people with similar interests, sitting around a campfire. Sharing info, stories, laughing and learning.
This forum has one issue with me because it covers all the models, many of which I don't know anything about at all. I'm riding a 2005 People, but it's only one of 7 bikes I own. I've enjoyed reading older posts on the 2 strokes and there's a lot of really great info in them. And this general discussion section is a great area for just that.
The offer for the Facebook location is greatly appreciated, but I'm not a Facebook user and I'm not interested in becoming one. Another great part of the internet is freedom and ability to just not go to areas by choice. You're not interested in ADV, and I'm not a Facebook user.