The Ontological Argument - valid or debunked?

[Edwardo Piet]

Even if it did not apply just as much to God's non-existence as his existence: For me the fallacy is one of equivocation. It's equivocating the mere logical possibility of God's existence with possibility in the sense of a "possible world". The fact something is logically possible doesn't mean it exists in any possible world, it just means it cannot be proved impossible.

"Not necessarily impossible" =/= "Necessarily residing in at least one possible world."