http://www.dota2.com/

check out the Q&A, clears up some speculations about the game

imo i think the allowing friends of similar skill to step in is an amazing feature

what

i like how you can get a ringer

copy and past the direct statement, i was too lazy to read it please )

this game won't be free right? im guessing because it's run by valve..

thats like asking someone who made something if they should get reparations for what they have done.. pretty dumb question huh?

Q: Is there reconnect support for DotA 2? (by Vanes-UT)
A: This was actually one of the very first things we added early on, before the game was stable, in order to help with testing. You’ll also be able to have a friend of similar skill level substitute for you in case you have to leave. Players that want to improve their reputation in the game and community will also be able to help out by joining ongoing games that are missing players.

can see it being abused massivly

it will undoubtedly happen, but there will always be ways of abuse, and there is a restriction on skill level, which i'm assuming will be a certain +/- threshold on something similar to PSR