Guilty. There's not a great level of abstraction between bookmarks (I definitely want to remember this) and open tabs (I need this in my working memory for a day/week/month, and/or this is interesting but I don't have time to read it).
I guess session savers? Never really got into them because (at the time a few years back) they weren't great for indexing within pages. Might give it a try again.
The problem here is that there are too many barely working crutches.