There's been a lot of talk about the Disavow Links tool, often in the context of cleaning up after misguided SEO efforts (such as buying links). I haven't bought or even solicited any links, but in WMT, I can see that I've got more than 20,000 links (mostly on archived pages) from a news aggregator that stuck a link to one of our pages in a sidebar resources list. It seems that, whenever the news site runs an article on [topic], the link to our page is in the sidebar.
Google has never sent me a warning about unnatural links, and the news aggregator's sidebar links are relevant (they're only from the aggregator's pages on [topic] to our own page on [topic]), so I hate to disavow the links unless there's a good reason to do so. Am I being paranoid? Should I even be worrying about this?