Data mining shifts to high gear at Twitter?

Anyone else notice a massive uptick in questions that seems designed to tease-out your demographic profile?
How old were you when (insert movie name here) came out?
Did you ever see Jaws as a first run movie a the theater?
Are you old enough to have used cassette tapes for music?
Lists of items you've done/eaten/used?
What food is your city/state best known for?


Seems like it's gone wild since the first of the year.
Just because I'm paranoid, doesn't mean they're not mining data. (lol).