I started multiboxing 4 days ago and everything went pretty fast and smooth actually. All 5 are 19 now (guildname = The Fantastic Five) and fully geared.
multiboxing seems new to my realm and I have seen over 500 WTFs already. :thumbsup: (and lot's of whispers from ally twinks that got 1-shotted).

I am going to try 5 70s, but the leveling process... ;(