[Notice] Big Foot Glitch Abuse

That's easy. There are already monsters in game that are this way (LoL Goby Houses.) Just make the monster poison immune. (The only problem for that is that Ice Demon and Fire Demon remove the resistances, and there are no monsters that are immune to the effect other than bosses, so Nexon needs to code Ice/Fire Demon immune nonboss monsters. Other than that, I see no great difficulty on Nexon's part.)

I like the idea of a % Attack damage cap. They should set that cap at 100K to MATCH the existing damage cap for everything (except pierce with 150K damage cap)...
100K would technically be impossible to reach for Poison unless the monster has 4 mil HP. Which wouldn't be practical.
100K would be impossible to reach for Shadow Web unless the monster had 5 mil HP. Which, again, wouldn't be practical. (And if it is 100K, triple throw could outdamage it.)

So a damage cap for the two skills would fix not only bigfoot, but the game.

What about shadow web?