That seems like a lot of work for something that still won't solve your problem. If you're *really* concerned about spoilers in questions — even behind spoiler blocks — from certain sites, then you're better off just not visiting those sites, from Hot Network Questions or otherwise. It's the only way to be sure. With a userscript you can filter the list to exclude sites you find problematic. Right now you're asking *everybody* to forgo questions that would otherwise be shared because of a concern about spoilers in *some* of them that can be avoided by not clicking (or hovering, if you do click). Shouldn't these sites, and the authors of their hot questions, have the same opportunity for network-wide exposure that others have? Further, it wouldn't solve your problem. You're relying on users to learn a new guideline and take a special action (some sort of labeling) for reasons that are external to their site. It's hard enough getting all users to read and follow the documentation now (e.g. on- and off-topic lists), so it's inevitable that some won't follow this guideline and you'll still see those questions in the list. Plus you'd need a new mechanism for it; using tags for "meta" information like this is not what tags are for. **Manual, extrinsic meta-methods don't work.** Perhaps the system could filter from the HNQ any question that contains a spoiler block. That at least would be an automatic method; it relies on people using spoiler blocks, but sites that care about spoilers already have reasons to enforce that. I believe the HNQ already filters out questions containing certain words in their titles, so maybe adding this check is feasible. Barring that, I recommend that you not click those questions, or that you use a userscript to filter your own HNQ list. But, you might ask (as somebody did in a comment), what about questions with spoilers in their *titles*, where "don't click/hover" isn't a solution? Spoilers in question titles are either thoughtless or mean, and those sites already have rules about not doing that. Do you think that people who won't follow those rules would follow a different rule designed to keep those questions out of HNQ? Users should definitely be careful about how they post their questions, but not just for an HNQ filter — they should do it for the people on *their* site too. If you're concerned about spoilers in titles not being addressed by these sites promptly, your only safe option is to filter your own HNQ list. Related: - https://meta.stackexchange.com/questions/214137/weight-hot-network-questions-sidebar-by-viewer?rq=1 - https://meta.stackexchange.com/questions/90885/can-you-filter-out-certain-se-sites-from-the-hot-questions-list - https://meta.stackexchange.com/questions/222721/how-to-avoid-hot-network-questions-on-the-sidebar