Cobwebs slow down mobs, and if you can lure mobs into the Cobweb, you can easily kill them.
- Can be used as the door of a mob-protected room, since minecarts can get through with ease; mobs can't.
- Items thrown at the cobweb will slow down
- Sand falling will slow down, then break.
- The slowest speed in Minecraft is: Placing ice under soul sand, cobwebs above the soul sand, then, walk in backwards blocking with your sword, sneaking, and under the effect of slowness