i went back to the threads and you didn't post anything new. what is your question..
i don't know much about usb mic since i have never used one but i do get artist that want me to mix there tracks from time to time that are recorded threw usb mics.
when you buy something its usually whats in the pic is what your get. from my knowledge most usb mics are meant to site on your computer desk while you use them so they probably come with a shock mount that will sit on your desk. most mics come with there on shock mount because most mics are different sizes and shapes.
pop filters come a dime a dozen. i got a metal one because its sturdy, big and i can wash it whenever i want.. pop filters stop from you spiting on the mic and when you pop out wind out of your mouth it stops at the pop filter before hitting the mic and creating a bashing noise.