It's an excuse to read resumes with the Bozo Bit in the "on" position; if he were any good, he'd have found a way around the HR wall and into a channel that actually works. In which case, why read them at all? Oh, because it's something to do while drawing a monthly salary for it.

The reason for the Resume Blizzard is that it's free to send one. It also gives companies the right to indulge in the myth that they're hyperselective because "we only give an offer to 1 in 500 candidates". It's technically true, because 485 of those were resumes merely scanned for some bullshit reason to reject (e.g. last job was too long/short, state undergrad, lack of buzzwords).

Here's an idea that I had: an online-ed website where you get credits for completing coursework, and sending a resume has a non-zero cost in credits (which is refunded if unopened). It's the best way that I can come up with to make front doors work again.