Since there seems to be an increase in guilds teaming up to defeat raids lately, we've had to make some additions to RBK to make joint efforts transparent. I'm told that before we took over RBK, joint effort kills weren't even allowed to be submitted to RBK. We aren't that strict, but we do want it to be shown when a kill was part of a joint effort of two or more guilds.
So now when you submit a kill (for content from The Broken Mirror and newer), you will be asked if your raid kill was a joint effort. To qualify as a single guild kill (non joint effort) your raid must be composed of 91% or higher of players wearing your guilds tag. If your raid has 10% or more players with another guilds tag, then your raid kill is considered a joint effort, and you must correctly submit the kill as a joint effort.
The submission process is still straightforward - there is just one extra step. After you've clicked the "Submit This Kill" button you will be asked if your kill was a joint effort. You simply select Yes or No, then press the Confirm button.
On the RBK Home Page, joint effort kills are marked with an * next to the kill date.
Please post here with any questions or concerns. Thanks guys.