It easy plugin help's you deny blocks in selected world.
!!! Very useful for moded servers.
How to use:
You must be OP
/wdeny + <block> (deny block, world were you stand)
/wdeny - <block> (allow block, world were you stand)
/wdeny msg <msg> (msg for players who wanna use deny block)
/wdeny enable (enable plugin)
/wdeny disable (disable plugin)
/wdeny reload (reload config)
Work's on 1.7.10+
!!! No metrics, no other garbage loading server :)