I must be missing something here.

When I submit an image, Alamy puts all my IPTC keywords in 'comprehensive keywords'.  I then have to cut/paste them all into 'main keywords'.  I don't know if I have any images with so many keywords that they won't fit in 'main' so I have little if any use for 'comprehensive'. 

So why are some of you so enthusiastic about the current system?  It's just an annoying waste of time for me.

Alamy has done a great job and is still my favorite site for adding photos! If the photo is good, low noise and no artifacting then it's good to go. No BS of the other sites like istock, Dreamstime, Fololia etc claiming bad composition and so on and who determines that?
Here is a good one from Dreamstime:
(Poor lighting due to lighting conditions (wrong time of day, dull skies, harsh shadows etc.) and/or camera limitations / Poor contrast or incorrect exposure.)
The photo was rejected on Dreamstime, Fotolia, Graphic Leftovers and a few others, it was taken in my studio so I don't know where the dull skies come into play.
The photo was accepted on Alamy and has sold 3 times since March 16th 2013 and has made a little over $600 which half goes to me. Not bad for a crap photo according to the companies that I would have made a dollar fifty from.
So thumbs up to Alamy!

I don't see a lot of difference from the point of view usability.
The face is different, but the rest (the managing part) is always the same.

It looks like these persons using a lot of make-up to change there external aspect, put staying the same *inside*�