Player damage has been enabled for Creepers, you will now take damage from Creeper explosions, however block damage is still disabled so they cannot damage your buildings etc!
Exp will therefore now be awarded for killing them, this has been set to 15 (the same as Cave Spiders), Exp awarded for killing a Ghast, Enderman or Blaze has also been lowered from 50 to 40 for a better balance.
Finally, I've added some rare items to the Admin Store which can be bought for Exp, these are:
8 Coffee Beans for 3000 Exp or 32 Coffee Beans for 10000 Exp
8 Hops for 4000 Exp or 32 Hops for 13000 Exp
Enjoy!
Enjoy!