I had a look at curious cat, it's awful. There's no public feed, so you can't see who's asking questions or who has entertaining answers. As much I think you're all wonderful people, it's nice to find new people which is nigh on impossible.

Tellonym was utter crap, kept telling me I had no Internet connection.

I've still got Ask.fm from when formspring then spring, went under, but I don't know if they've changed the format where you had to be mutually following to get questions from someone.