In Firefox I just star and occasionally tag. Organizing bookmarks is not something I find valuable. Then using the (search filters)[https://support.mozilla.org/en-US/kb/search-your-bookmarks-h...] to find what I need.

* Add ^ to search for matches in your browsing history. * Add * to search for matches in your bookmarks. * Add + to search for matches in pages you've tagged. * Add % to search for matches in your currently open tabs. * Add ~ to search for matches in pages you've typed. * Add # to search for matches in page titles. * Add @ to search for matches in web addresses (URLs).