Thanks for the feedback: Crocodoc (YC W10) has a new look and improved tools
crocodoc.posterous.com
crocodoc.posterous.com
My question is, why would I want a document collaboration system that I can't use at all on an iPhone or iPad (even in view-only mode), when other solutions like Google Docs work (to my knowledge) quite well?
You might try eliminating the word and having the hide button on the left (it seems comments always open anchored at the top left) and a delete button on the right. I would recommend changing the x (maybe make it red or a garbage can?) to make it more clearly signify 'delete.'
Little nit-pick - on the CrocDoc.com homepage you've got a space in "mark up" (crossed out) and then in the line below have it all as one word "markup".
Gramatically both should be "mark-up" with a hyphen - markup is used for actual code description . . .