Survey question search

We're working on a survey question database at www.surveynet.ac.uk/sqb/qb/questions.asp
that will allow users to find questions and then cross-reference them
to the same/similar questions asked elsewhere/at other times (inc.
cross-national surveys). Any input as to what that database should
provide would be welcome.

There are already a number of other question banks out there that do some nice things - see www.surveynet.ac.uk/sqb/qb/otherquestionbanks.asp.
I'd like to think that our forthcoming survey question database will
borrow the best features of these other resources.