talk nerdy to meThe egg white is an excellent growing medium for bacteria...it's like protein and water in a semi-liquid form. Remember in science class when you grew stuff on petri dishes? Well, same formula except it's not nutrient agar (seaweed protein) but egg white. Protein grows bacteria, and bacteria love nice warm moist places..like an egg in an incubator. The weeping is due to pressure being built up in the egg by multiplying bacteria (which normally get in via a tear in the sac or from minute cracks or places where the protective bloom is off the egg) and the waste the bacteria produce pushing exudate out the egg pores is the weeping. The egg explodes when pressure builds to an extreme. Often upon candling right before explosion the egg will appear abnormally dark because the bacteria has multiplied to dense amounts... But if your egg is weeping you don't need to candle to figure out it should be chucked.
"If it's weeping, not worth keeping."
corrected for typos