That's like saying Digg isn't dead because the website is still there. But what was once the front page of the Internet is a forgotten footnote that now stands as a bot content farm. Reddit will go the same way.
You mean "Gun Manufacturing" (Mechanical Engineering), "Bunker Building" (Civil Engineering), "Things Hitting Things" (Physics), "Explosives, Toxins, and Poisons" (Industrial Chemistry), "DIY Alternative Medicine" (Pharmaceutical Chemistry), "Owning the Libs" (Law), "Ripping off the IRS" (Taxation and Accounting), "How to be Offensive" (Language theory, reading/writing comprehension), "How to win at Gambling" (Mathematics, Statistics) "Why Libs Think Like Pussies" (Philosophy), "War" (Geography, Geo-politics, International Studies).
They can't send it if they haven't stored it, that's the proof. Whether temporary or not it's a weakness and attack vector for obtaining unhashed passwords. And if they stored it, it should be immediately hashed at which point they can't send it.
Do portals require one end be the same size as the other? If not a large portal leading to a small portal could increase pressure alone.
If one was to make a portal in their own bladder, and redirect that urine out of a portal that is only a few microns wide they could potentially create enough pressure differential to create a stream of urine powerful enough to cleave someone in twain.
Depends on your climate. 30C and 80% humidity and your bread goes mouldy in three days outside of the fridge.