From blog.forumwarz.com

Site Updates – Mar 9

written by Evil Trout on March 9th, 2008 @ 08:50 PM

ForumBuildr Updates

You can choose to pbum on submissions you don’t feel strongly about either way.

Players now have a ForumBuildr score, that will change based on the quality of their submissions. Everyone starts at 0.

You are now limited in how many submissions you can make in a week. A higher buildr score increases this.

I read some more somewhere and basically, if you get more +votes you increasing the quality of your submissions, you get more.