I always get myself a Medusa Head before I kill the Eater of Worlds.
That was probably put there before Medusa was made Hardmode only, though.
Everyone knows that players who have access to swords that deal over 54 damage may need advice on killing the Eater of Worlds. I mean, you only have to have at least a Night's Edge with at least a +10% damage modifier while wearing full Molten Armor to accomplish that kind of damage.
Another great strategy that should be on the wiki that would benefit everyone is to just sit on a thrown Sunfury and wait for the Eater of Worlds to commit suicide. I call it the "I didn't do it! He dug into my Flail, I swear!"-strategy.
In all honesty, I'm more concerned about things that are outright wrong on the wiki, rather than just pieces of useless advice or speculation.
An example:
I mean, that one is just plain wrong. It deals 150/300 damage, so let's compare:
The Red Devil deals 160/320 damage with its trident, the Clown deals 200/400 damage with its bomb, the Santa-NK1's deals 160/320 damage with its spike balls, the Rune Wizard has a melee damage of 200/400 and the Skeleton Sniper deals 200/320 damage with its shot.
But third-highest, right?