Just a suggestion to consider whether any improvements can be made to the Geekzone search, I find I always end up doing a Google search instead (site:geekzone.co.nz) then use the search tools to filter out old results.

For example, if I search 'best ISP' in the Geekzone Google custom search some of the top posts are from 2008 and probably not very relevant anymore.

I think for forums like this date of posts is probably one of the most important factors when searching. Would be awesome if there was a 'sort by most recent' or even if the search results showed the date of the post on them would make a huge difference :)