Here is the bitcoin group, showing currently 4180+ members
But that isn't a Facebook group. It is a Facebook page. It has 4180+ people who "like" the page, but a page has no "members".
I've since found out what liikely happened. Nearly a year ago Facebook introduced "new groups" for connecting smaller groups of people who you know. For businesses (which "Bitcoin" likely falls under), they want Facebook pages to be used instead of Facebook groups.
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http://www.facebook.com/note.php?note_id=10150249514781340The old groups all got closed and no longer show up in any searches -- instead you need to have a link to it (or know the URL) if you are not already a member. If you've left the group (which I must have done, somehow), having a link to it is the only way to get back in.
Additionally, I've since read that there have been rivalries between groups and reporting the group as "scam" enough times would cause it to disappear. Though the Bitcoin "not a fan" club could have done that, a more likely explanation is tht the group I'm thinking of is still there, just that I'm no longer a member and can't see it in the search results.
