My dad used to work for a huge electrical store, they were opening their biggest store to date and were advertising for over 60 positions for part time/weekend staff - as you can imagine they got over 1000 CVs and needed an extreme but consistent method to work through them, they were firstly split into piles of 100 and eventually had to be put into piles of 10 so that there were about 100 - 120 people to be interviewed.
During the process they all had a tick list which each CV had to abide by, mostly it was email addresses, spelling mistakes and hand written CVs were out - they ad to be ruthless otherwise they would have got nowhere! I was about 13 at the time and my dad give me a red marker and told me to mark each one that didn't have their name or initials as their email address.
We probably culled about 70% of them using this method, the others were basic mistakes - instead of a cover letter each candidate had to complete a basic info sheet which included name, DOB, gender etc The company insisted on this as the last time they interviewed they had noticed that a remarkable amount of candidate's CVs lacked this basic information.
Anyway, by the time we had spent about a week sifting through them my Dad interviewed them, he again used a tick list - jeans were at the top of his list for this, along with poor personal hygiene and, yep, you guessed it, people who brought friends or parents along!
When they eventually got their candidates they sent the other applicants a letter to explain that their application had not been successful, along with an information sheet on CVs and advice for future job applications.
I just don't think that anyone realised what they were doing was wrong, or thought to check that the CV that had been created by a "professional firm" for errors. It was actually a great exercise for me ha ha my CV has quite often been commented on as being perfect! Maybe they should make all 13 y/olds trawl through piles of them ha ha