do you repost unresolved discussions?

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I like to resolve my discussions. it's good to go back and reward a good answer. I spent some time doing so today. The problem is i have some with no answers. there is no way of moving these back into circulation as i can't post, and when you use the search system they don't appear on the (first and only) page. Do i repost these questions, can i delete them? obviously i'm not talking about 'what colour should the president wear' type things, but real questions i'm sure people on Mylot would be able to help me with.