  == Restoring questions on the Ref Desk ==  Hi Red Act.  In the future, if you choose to revert a removal I've made from the Reference Desks, could you drop me a line?  It's not something that I tend to do lightly.  In that particular case, you were restoring a trolling question posed by a former editor called .  He's been banned for a number of years, based on a truly remarkable amount of disruptive conduct.  He comes back periodically – probably while he's on holidays from school – and trolls the Reference Desk. If you watch closely, you'll probably also see him or his socks vandalizing the user and talk pages of a number of admins (including me).  He has created dozens of sockpuppets over the years (and indeed, used  just a little while ago after I blocked his IP).  We do our very best to ignore him and deny him recognition, and I'd really appreciate it if you wouldn't feed this particular troll.  His IP addresses are uniformly from the Tiscali UK DSL range.  (WHOIS says that includes everything from 79.72.0.0 to 79.79.255.255, but most of the IP addresses I've actually seen Light current use are from the 79.75 pool.)  You may have noticed he was back again today, making childish Uranus puns ().  I don't understand him, truth be told.  At some times he comes across as having at least a firm undergraduate grasp of electrical and acoustic engineering; at others, he's got the sense of humour and emotional stability of a slightly-dim eight-year-old.    Just thought you'd want to know about what's happening — as a new Ref Desk regular, I'm afraid you're going to see more of Light current than you ever wanted to.  Cheers,  