I don't think that most of them would really care since you are an affiliate and agreed to their terms of service. However, its possible that somewhere in the TOS it may state that if you display items on your site (or their logo) that you must include a disclaimer holding XYZ company is in no way affiliated with the operations of "your" site etc.
A little research is better than a lawsuit and a bunch of corporate lawyers scratching for compensation from the day the logo was first put online until the day they made you take it off.
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