Yes the most American website ever is meetup.com go search the meetups in your area and at least 95% if not 100% are what you DO at work or when not at work, and almost none exist to BE someone or to hang out with an identity. The only identity groups will be like "something area singles group". I find it typically American that all americans aspire while not wanting to appear aspirational, so lots of americans want to start a business, but none would ever be caught dead at a meetup called "we want to start our businesses" or "we want to lose weight", americans can have "gym buddies" to hang out with cool bros but never "weight loss buddies" because that sounds very aspirational. Perhaps Americans are too pessimistic to be caught sounding that optimistic, I donno. Its a pity, you'd think meetup would be a good place for "I wanna learn (some technology)" but thats as unamerican as possible because its identifying as wanting to learn something as opposed to physically doing something, and even worse its aspirational.

Also it never fails to amuse me that they'll be about one hiking group per half million people in a metro area and they all claim they're the "real group" the "fun group" the only "active group". Something to do with Dunbar's number you just can't have 1000 americans work together they have to make smaller tribes and pretend the other tribes don't exist. All a bunch of foolishness. Sometimes I think meetup.com is all an elaborate stunt by some grad student gathering anthropological data about Dunbars number.