Sweet! I'll upvote on this one, always nice to see your lists @pennsif !

While not native to Steemit, there is a solution for bookmarking posts... @busy.org . I wrote up a post about it showing some benefits. It's not an end-all-be-all, and I find myself using Steemit.com more, but it's something that may help fill a gap?
https://steemit.com/steemit/@greenacrehome/have-you-heard-busy-org