Right now the search is only checking TOPICS and Topic AUTHORS... that can be changed, but an increase in search capabilities will tax the site.
I'll check with Ed and see how flexible he wants to make it... what else would you like to see checked?
BTW you can search on a partial name such as 'goat' and it will pull up any topics posted by anyone with 'goat' in their name, or topics with 'goat' in the subject...