Let's say you went into the lane with someone and you realized that the lane is going to lose so you opt to farm the jungle

Is this bannable under "refusal to participate" or what constitutes as "refusal to participate"

I remember getting banned for it once, which was complete bullshit. It likely will not happen to you; I think I got the ban rescinded via appeal.
However, it's a different situation entirely if you type in chat. Seriously, I bet 50% of the bans that happen could be avoided if you just do not type at all. Typing makes everything worse for you.
You can say "sorry, I'm going to go jungle because I think I'll farm more effectively that way," and you're golden, because even if you get banned you can just refer the GMs to that statement. Don't type "fuck it, going to jungle," etc

The only time jungling will you get banned, I think, is if your team asks you to push and you say something like "fuck you guys, you suck and I'm gonna just farm," If you say something like that, justify it with "so we have a better chance late"

This post was edited by Ectasy on Mar 20 2013 07:02pm

I'd say 90+% of bans are from typing in chat. At least, 90% of bans are made worse because of this. GMs can't predict your motives or attitude as a player purely based on your actions. If you give them away by typing, then that's your own fault.

When throwing a game or simply giving up on winning, never say anything negative in chat. Makes games easier.

u can get banned only if u r stupid, as long as u pretend to play normal its ok, hell even go 'help' and die a few times

it really is random at this point, gms have a certain number of tickets they evaluate and my last 4 reports failed in 100% bannable cases
i even went out of my way and directly contacted sgms on forums but nobody bothered to check replays or even reply to my message

now i dont even get ticket succesfully created in mail not to mention if it sticks or not
past some prior patch i would get response no matter what to notify if ticket was sucessful or not