Fatter trolls burn more. Maybe troll candles are the way The Reg plans to cut spending on lightbulbs?
"The question is, how can data be made useful for research purposes without compromising the confidentiality of those who provided the data?"
"...further user-specific restrictions on the use of information in databases would go some way to solving the problem"
So what you mean to say, is that the confidential information stored should only be viewable by the people who need it for legitimate purposes?
Covered already by our Data Protection Act.
The real issue that people have with privacy could easily be solved with a big group unbunching-of-panties. We already have Big Government departments that have excessive, often incorrect information about us stored. It can be expensive (overdue council tax bill for house you moved out of, resulting in a CCJ because you didn't get the mail) and dangerous (allergy to penicillin omitted from medical record) but it's something that we seem to have quickly just taken as the normal condition.
I would welcome a single, coherent, accurate database that could be used by all Government departments, if I felt certain it would be planned, implemented and maintained with some degree of competence.
Guess what? It's not possible to feel that way given the current state of this country. Every IT project in the news is overbudget, badly run, and often just dead-in-the-water after millions/billions of pounds have been blown.
ID cards are not necessary, we already carry enough information like that. It's probably wrong (I know that most provisional driving licences have the wrong address on them, given the number of calls I used to field whilst on a DSA contract) but it's the same information that would be collected.