I've happen to use OpenACS site-wide search quite a while in the last days, and I should admit, usability of it could be improved. Here is the list of things that would be nice to have and would make people life easier:
- ability to filter search results by result type (is it a forum posting, or news posting, or maybe chat log, etc.)
- ability to sort results by source (which forum, etc), creation date(if it's forum to sort by first or last posting dates) and by number of responses or comments.
- also advanced search is not really very advanced, it would be nice to be able to set filters for possible results and to make more complicated search queries. Same old Google is nice example.
That's just a few suggestions. I'm not a technical guy myself and can not do these things myself, so it would be really nice if some smart people with a little bit of free time could take a look on it and make some changes to a brighter side of life.