reddit thread about dodging ranked
http://www.reddit.com/r/leagueoflegends/comments/28k0t9/dodging_ranked_is_a_little_messed_up/
Interesting. There is an informational Riot post there regarding dodging:
Riot said:Hi, there was a period where we attempted to remove all penalties except time penalties from dodging in ranked. What we saw was more players would dodge to avoid matches they felt were unfavorable. This resulted in a pretty bad experience. Some kind of penalty for dodging is important.
That said we feel sometimes there are legitimate reasons to dodge. The first dodge is a 3LP penalty. There is a bug where if you dodged in another queue recently your first dodge in ranked can sometimes result in a 10LP loss. Sorry you encountered this.
Players are no longer immediately kicked out of promotions for dodging. This was changed early last season. Now the game is just counted as a loss in a series.
As for dodging not resulting in MMR losses, that's true. However MMR isn't how we measure your ranked position so if you dodge you will have to make up the league points by continuing play at a high level to advance.
*edit* Also according a comment from a non-Riot person there, pre-game and post-game chats are now saved in addition to the game chats. This is really nice if true, since a lot of times people can save the slurs until the postgame lobby and then try to rage with impunity.