Is there a way to identify a thread you want to return to without tagging?

Question

Is there a way to identify a thread you want to return to without tagging?
I will try to explain what I mean.
Let say someone asks a question and you are curious at what people may suggest as solutions.  The interest could range from simple curiosity to "oh, I don't know how to do that, but would like to learn", or whatever reason that would cause someone to revisit a thread. 
But the interest is weak enough that you do not want to subscribe to the discussion.  And the topic is not something you want to tag because it is an unusual thread that is unlikely going to re-occur, and you are not sure if you will or will not revisit after a solution is posted or the discussion goes a certain way. 
Another example is if the question is interesting, you do not want to mark it because there is no answer / solution yet and you are curious if anyone would ever provide a solution, so you do not want to tag it and a subscription would be useless if no one replies.
OR
Maybe it is a hot topic of the day / week and that's it..  You would not revisit at a later date.
But for the moment, you want to easily find it during the day or have a reminder that you want to revisit the thread ether in the near future or later when someone has provided an answer.
Is there an easy way to mark threads that you want to re-visit?  Like a "todo" list, but rather a "to re-visit" list...
R
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Answer 1

Delicious is a website wher you can store URL for later use/retrieval. For every link you add you can add some tags, a description, and you can share them with others.
I'm not using it for the use you have in mind, but it would be an idea. I have set up a special Mouse Gesture in Firefox that creates a delicious entry for the current page.
I use delicious heavily when I am looking on the internet for a solution to a specific problem, what happens during such a search is that you see 20-30 pages that look promising but only 3 are actually on topic. Sometimes it turns out one of the 'not so good pages' are actually googd pages, but 3 days later you don't know exactly the search term  you used, or you are on another PC and it's hard to trace back your steps on the WWW. So by using Delicious I can easily create a list of pages on a particular topic.
Ton
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