making a list of certain threads?

[scrapster]

is there a way to make a list of just certain threads (either manually or automatically) so that members can subscribe to just the ones they want? i know they can reply to a thread or subscribe to it so they can get updates, that's not what i want.
we have lots of contests and such and are working on a way to make them easier to find. members have requested a list where they could check the ones they are interested in so they have that list as an easy reference. if they just reply to that thread, it's in their list of subscribed threads, but that's a long list if they reply to lots of other separate topic threads.
and i know they can get a notification in the calendar, but that's just once and they want a place to refer to the threads whenever they need.
i do know a workaround would be reply to or sub to each thread, then move it to a separate folder, but they need an easy way. read down a list and check the ones they want. is there any way to do this? thanks!