So last week I got a warning letter from a website which sells a certain niche video. My website is part of a forum that links to free downloads of these niche videos and some of which are from the company that sent me the warning. They warned that if I don't take down my entire website soon, they will pursue the legal option that is available to them. My question is that how far do I have to abide by? I really don't want to take down the website and the forum since it has grown steadily yet I'm not sure how serious the company is about pursuing legal action and what grounds they have for it. They linked me an example of what I was violating and linked to a forum post where someone posted a link for a download to one of their videos which is clearly copyrighted yet my website is just the medium. I realize it's probably warez linking yet what could they do if I deleted all of their product off of the forum?