Over the years, I have performed many “acts of curation”. Most of this has been simple collection of links, but several instances (Portland Protest News, Kamala Campaign Timeline) resulted in creation of websites to document a particular topic. These two sites in particular were collecting of daily links to document protests in Portland, Oregon, and the campaign of Kamala Harris for US President.
For curation of news events, it is important to keep up with content collection on a daily basis, as almost all news sites provide little to no support for tracking of stories, and searching usually turns up items in the last 2-3 weeks. For more stable topics, adding content as it is discovered is sufficient (see my Links Zettelkasten as an example).
Beyond the collection of links/information, the other primary problem is the organization of links/information. Curation, as a practice, is an attempt to organize information. My zettelkasten used individual topics in alphabetical order as headers, with links underneath. Other examples of collections include Indieseek.xyz from Brad Enslen, a curated directory. Karl Voit has a series of posts/presentations on personal information management (PIM). Chris Aldrich (through the use of tags in WordPress) has been performing some significant research on zettelkasten and the zettelkasten practices of Niklas Luhmann. All collections of this kind require effort, and most of them are for the benefit of the creator. Still, once these collections are available, they can be discovered and used by others.