I'm one of the frequent users of the spam rating system, but I've been guilty of reporting some users as spam simply because they haven't listed any personal information, only to find that a few days later the profile has been updated and the account looks genuine. A way to undo the spam rating would help here.
As I've mentioned before, the only thing I don't like about the new advogato is the change from "diary" to "blug" (or whatever that word is.) Although overall I'm very happy with Steven's work, I'd still like to see that changed back. And a pony, for ncm.