why a member search option? - If it does not work

http://www.demozzz.com/dolphin703b/search.php

it is a very important function - it's the third page visited by members of my site ( google analytics)

I'm still with D 6.1.6 - with over 11,000 members - I'd love to migrate on D7

But without this feature I think this is unreasonable - there are too many competing system with sophisticated search

Apart from this problem - congratulations for your work