John, Steve 'n Rich - gentlemen, thanks. I do know about using browser based bookmarks and my problem with using them is that I have a lifetime supply of bookmarks - all badly sorted or mostly unsorted. There's a lot of great information and ideas here on OGR - much of which (for me) lands in the "I gotta remember to do that when I get around to it" category. And like a lot of others, I have many round tuits stacked up so finding that one really relevant discussion (or two) here on OGR when the occasion arises can sometimes be frustrating (no fault of OGR) - e.g. search for 'passenger car LED lighting' gets many threads (many quite good) but trying to find that one thread you remember as being 'the best' isn't always easy. So I was hoping for some way of flagging or marking discussions here on OGR.
Steve - I really 'like' your suggestion - I'm going to give that a try. Sounds to me like a fairly straightforward means of marking/flagging threads for later use.