This is the ranking system instituted on the site. All ranks are auto-subscribe once you reach the number of posts needed for them. Except for Lantern, Which is designed only for Administrators/Me.
Grass: 0 Posts
Dirt: 5 Posts
Sand: 10 Posts
Log: 20 Posts
Wood: 35 Posts
Rock: 50 Posts
Coal: 75 Posts
Copper Ore: 125 Posts
Copper Bar: 175 Posts
Copper Wall: 250 Posts
Iron Ore: 300 Posts
Iron Bar: 375 Posts
Iron Wall: 450 Posts
Gold Ore: 500 Posts
Gold Bar: 600 Posts
Gold Wall: 725 Posts
Diamond: 850 Posts
Diamond Wall: 1000 Posts
Bloodstone: 1350 Posts.
Ranks may change in the future from updates and such. As well as increase in posts needed for ranks.