On: Ask HN: Is Twitter non-existent among my age group?

[noodle]

i know people who use twitter across all age groups. not really that many, though, and none in my real core group of friends.

i think that the biggest correlation to twitter use is actually iphone ownership. at least, thats the case with the people i know. and that probably tends to skew towards younger professsionals.

[catch404 → noodle]

I agree with this but also think the OPs sample size may be a bit small :) , look at the timeline for an example.