Currently Grind is only available as a private match setting , for those who haven't played it it's a cross between kill confirmed, ctf and a dash of dom.
When you get a kill you have to collect the tag and then run the tag to a flag point to score, its got some good strategy and can be a fun fast paced game mode. Which i've played a few times and really enjoyed .
* How to use the new vote system (which this is sort of a trial test for)
you can comment as you would a normal post but also have the option to vote up or down an idea.
(If you want to make your own idea thread, click idea on the right hand side of the forums, and make sure you check only you can edit in the advanced options>restrict authors)