On second thought, I'm going to change my mind. While the Twitter Q&A isn't nearly as good a read as the Geekademia interview, due to the medium limitations, it's still nice to have. And it doesn't qualify as clutter, since it would sit in a different post than the Index proper. So, I have no objection to inclusion.

About the new proposed rule: It makes sense, but if many such Q&As end up here, we may want to apply the anti-redundancy rule to them as well. It's not an issue today, though.