Well I do certainly agree with your comments, but on the other hand there is a small amount of the internet users that understand as we do, most people are not aware of how readily these iamges are or where they come from.
Bottom line is if they are used with purpose and a context such as a bussiness consulting firm, it is important to provide images to customers that help sell your product, though I do understand how obvious some of these images are to us, but when put into context with a site and related content they can help sell the product.
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