Thanks to a post on Ditkomania forums, Rob Imes (author of Ditkomania) has highlighted a list CBR has compiled (from user votes) that is considered to be 50 greatest Spider-man covers of all time.
It makes an interesting browse and of course Steve Ditko appears in the list (many times). However, it is clear from the appearance of #49 (ASM Vol. 2 #36) that this list is somewhat trivial . It also asks the questions: What makes a cover great? And to what measure or standard?
See what you think, click the link: