
Originally Posted by
keya mukherji
I'm always very confused

with the usage of 'of' and 'for', every now and then, here and there, these two prepositions put me in trouble... this time it is with the word 'criteria'... should I use 'criteria of' or will it be 'criteria for'? and if both are applicable, where and how should they be used? even on the internet and at several other places, I have seen both being used, this adds more confusion to my already confused state...

Yes, it's confusing!
criteria of means set of requirements
criteria for means criteria required
'A password can meet most of the criteria [or set of requirements] of a strong password but still be rather weak. For example,
Hello2U! is a relatively weak password even though it meets most of the
criteria [required] for a strong password... .' (passage from
http://technet.microsoft.com)