Boosting/Smurfing

Riot's decided that boosting is allowed by the rules, as long as you do it with by having a Diamond friend play on a smurf account with you. It's not only allowed, but also encouraged that you use this function to play with friends' smurfs in Dynamic Queue.

Just a heads-up for anyone who's worried they're breaking any rules: you're not.

Edit: I have verified this several times withe emails to Support.