Sathya http://www.gravatar.com/avatar/1375f202e61682cc4963295f4b0430dc?s=16&d=identicon&r=PG Sathya asked: On Super User, we tend to downvote and close a lot, esp recommendation questions. Tell us about a downvote, close, deletion, or other such "negative" action taken against you on Super User, and what you learned from it.
Oliver Salzburg http://www.gravatar.com/avatar/ec198cb6fc38d98bb88dd390e0bed8e3?s=16&d=identicon&r=PG Oliver Salzburg answered: My most upvoted answer was deleted because the question was off-topic. Needless to say, I was very disappointed. I learned a valuable lesson about the scope of the site that day.
DragonLord http://www.gravatar.com/avatar/27f497f619785fb64129b9472c101a5a?s=16&d=identicon&r=PG DragonLord answered: I would try to avoid asking such a question again. If for some reason I don't understand the action, I would bring it up on Meta.
soandos http://www.gravatar.com/avatar/de26d10a3e719508a41415aedabdfd36?s=16&d=identicon&r=PG soandos answered: There was a user that downvoted my post because he felt that a warning label was not needed. I dealt with it in this meta post.
Daniel Beck http://www.gravatar.com/avatar/47a400884d886a87122398a6dc939081?s=16&d=identicon&r=PG Daniel Beck answered: I don't particularly remember any such action. A few answers were deleted when the question was off topic, but that was to be expected. I'd like to see this more often, actually. I haven't been downvoted a lot either, and very rarely got explanations, which is the users' right, but still severely limits what I can learn from it.
KronoS http://www.gravatar.com/avatar/4d19fd706ffd7042d3b1749ff4fa9ae9?s=16&d=identicon&r=PG KronoS answered: When I just first started on Super User, I had a question closed on me. I asked about it on Meta, and @Diago gave a great answer as to why. I learned a lot from that experience, not only how to better my question asking, but also that the Meta site was a great tool to use to better myself and the site.