Originally Posted by
Waervyn
I always run teleport when I have a Top-champ that likes a philostone, such as cho'gath or Nasus. If so, I start with regrowth pendant and a potion. Once I have enough money for a Philo (which is not a lot of money) I go back to base, buy it and teleport back. After that you're basically unmovable out of lane. I especially like to do this with champs that may have a tough early game top.
It's also nice for early game domination. If you can teleport back early for a doran's blade or whatever, you can win trades more easily (also because you can poke more, as you have regenerated your mana at some point while going back to base.
Hope it makes sense. It's pure personal play style, so no idea if it's 'viable', but for me it works. Afterwards you can use teleport for ganking, dragoncontrol (teleport to dragonward when needed) and splitpushing.