I think the option to search for unanswered posts is great. When there's not much action on the forum, I'd rather try and find a post that can do with a few words of encouragement.

I ersonally hardly log on during the weekends, as I mainly log on from work (Else my boyfriend can search through my browsing history and ask questions) - for some people it may be the same, or even the opposite, so traffic I think will vary according to time of the week too.
With holidays, people may be away.

I do however feel for someone that is reaching out for help, and has 0 replies. I hope these posts are found by someone...

Thanks for showing such concern! ((JD))