Interesting question.
It's funny because I almost think I'm more concerned about whether
I'm perceived as interested or interesting, and that's what I thought you were asking at first. How self-centered.
Anyway, to answer your question, I'd have to say "interesting." There can be a shortage of those in my experience. That'd be the answer when it comes to myself, too. I spend a lot of time on the internet I could be doing other things with, so when I meet interesting people I feel like it's been worthwhile.