I apologize if this thread creates a sense of redundancy throughout the forums, but I was finally able to get Adobe Flash installed into my Firefox browser (originally I couldn't because of some "lack of memory" ). And so I've been using Firefox to play zOMG!.
Compared to using Internet Explorer, when playing zOMG! with Firefox, you will experience exceptionally less lag issues. Lag is an inevitability in any online game, especially an MMORPG like zOMG!, but take it from my experiences when I say that you'll have an easier time running a smooth session of zOMG! when you're playing Firefox.
I did install Silverlight onto Internet Explorer, but to tell you the truth, it pretty much made little difference. It goes without saying that Gaia Online is pretty much made for Firefox.
The biggest complaint I have in regards to using Firefox for zOMG!, however, is that I couldn't carry over my free Superchargers, Orb-Doublers, or Ring Buffers from Internet Explorer. I used Internet Explorer to earn those items after completing some tasks for Nico. Now I can't go back and redo those tasks, so it would appear as though that if I want those items I will have to cough up cash for them, which kind of sucks.

Actually, there are some unique lag issues when using Firefox. There are some instances where I would hit an enemy in the game but none of it would register. They would eventually begin to register after roughly 30 seconds after having input damage to an enemy (and damage to me). But, comparatively speaking, this is better than if I were to use Internet Explorer, because for some reason, you're likely to lag like a snail if you're using Internet Explorer. Because of this, I personally encourage everybody to try zOMG! using Firefox and see if you feel any differences.
To download Firefox, go here.