Both are interesting, but the more "fun" of the two is getting the answers:
- Seeing who follows an answer can be very gratifying, especially if you recognize the name from elsewhere on the site as a common answerer, querent, celebrity, etc. Still, if all they do is follow the question, it's like being in the same room as a childhood idol, and never even saying hello… And then if you take the further step of asking them to answer, knowing they're already following the question… Well, aaaaaawkward… It's just kind of a subtly gratifying stalker situation, really.
- Given the number of unanswered questions extant across the site, getting one at all to a given question is something to be deeply appreciated… But not knowing when it'll come, or from whom, adds a certain level of excitement, should any answers actually be written. Of course, getting the answers, and reading the answers are two different things… It's possible to feel a great "deflation" should your question, which you feel to be totally fascinating, gets rather pedestrian, or even jokey answers.