Yeah, this has completely replaced most of my use of bookmarks. Now they mostly exist to improve search results, which is awesome.

And to go a step further: pinboard will crawl and index bookmarked pages if you pay a bit more, so you can search within page contents. I've almost stopped tagging things because I can get close enough just by searching for a keyword or two. Only real downside I encounter is that I can't search pages that are behind a login.