I often go through a late night browsing session and open up three or four Firefox windows with ten to 12 tabs in each .... but after about an hour it all just becomes too confusing and distracting. So I got in the habit of just nuking everything every hour or so. Just shutdown all of firefox and restart again.

If I found anything significant, then it was bookmarked, noted, turned into a PDF or documented some other way.

Stuff that had a bit of importance go into bookmarks, more important info is noted with the link, stuff that is very important is fully documented, linked and turned into pdf. Everything else is just forgotten because they weren't that important.