Related nodes by taxonomy term and managing the results

Hi there

I'm looking for some advice on taxonomies and tagging.

I've got a main site taxonomy that users can add to and can select multiple terms.

This works well up to a point - I've been tagging stuff and have created blocks such as 'related events' which appear on pages that share the same taxonomy term.

Obviously there is a tipping point where you can end up with too many 'related items'. Events or news for example can be limited to those that are current.

On certain pages I've got a 'related resources' (by taxonomy term) block and a user has tagged up these resources (around a 100) with multiple tags - around a quarter have been tagged with the same tag say 'assessment' so you get a long list of related resources.

I'm wondering how to manage this - instead of a related resources list do I have a 'tagged under' list of terms linking to the taxonomy term pages?

Also for example if there is a page 'Award' then subpages by year 'Award winners 2009' etc if they all get tagged 'Award' that's not that helpful as in the 'related content' list you'd only really need a link to the parent page rather than to all of the subpages.

I think I maybe coming at taxonomies from a slightly wrong angle or need to advise users to be a bit more targetted with their tagging.

Apologies for the poor english, I've just needed to get this out of my system!