Following up on
this [webmasterworld.com] discussion I wonder how many people actually use special operators. In my logs I see "" and + but not very often (10-15% at most). From the url I can tell most 'specific' searches come from Google's 'Advanced search' page. For those who don't know: you can recognise that page by all it's empty parameters.
Can some of you share percentages? Does the type of site make a difference? Research vs. commercial vs. ICT-related?
