User blog comment:AlexHawks/Challenge the meta - Support in the MID lane/@comment-5297851-20130423174146

The problem with supports going mid lane is that, you actually deny the massive exp from those who really need them. As support, you don't really need to out level other lanes, you just need to have your spells at hand when you need them. And also, you don't need that massive gold advantage in the mid lane.

But back to the topic, Mid laning supports that I had used and see that actually works are Janna(one of the best mid laning supports), Lulu(great poke and secures ganks), Thresh(Thresh was just released, 'twas my first game with him, went mid against akali, she hides in her shroud but I was able to push her out of it, went 3-0 during laning face against her), Soraka(her self sustain would drive anyone out of lane), Karma(obviously), Sona(great poke but really squishy though), Nunu(once laned against an ashe mid, started with boots 2 red/1blue pots, I drove her out of lane with my E harass and Q sustain, had to go home cause of massive gold and because I already wreck her tower, went back to lane with warmogs, merc treads)

Nami is not very efficient in mid due to her long cooldowns and spell delays.

Taric and Leona is better going solo top instead of mid. I used to main Solo Top Leona when HoG still existed. Good time, good times.