I recently started with a company who've benefited from using a competitors brand name to explain why theirs is superior. They're not wrong and neither have they been derogatory, however they have had significant traffic to their website using the competitors branded search terms. I'm concerned Google will penalise us for this (if so can you point me to case studies/similar examples), or am I worrying unnecessarily?

I've just started to work for a company who've purchased masses of domains with every conceivable permutation based on all their products with every extension possible e.g .biz  . eu. .net (including .co.uk and .com of course). I have two questions: 1. Is it worth keeping all these (they want to add more) domains or let them expire? 2. All the purchased domains are online - is there any point (they redirect with a 301)?

Our website (blahblah).org has 32 other domains pointing to it all from the same I.P address. These domains including the one in question, were all purchased by the website owner, who has inadvertently created duplicate content and on most of these domains. Some of these referring domains have 301's, some don't - but it appears they have all been de-indexed by Google. I'm somewhat out of my depth here (most of what I've said above has come from an agency who said we should address this before being slapped by Google). However I need to explain to my line manage the actual issues in more detail and the repercussions - any anyone please offer advice please? I'm happy to use the agency, or another - but would like some second opinions if possible?