Evaluating Information System Investments:

problem 1: What is Evaluating Information System Investments?

problem 2: Is 'IS' evaluation different to evaluation of other investments?

problem 3: What approaches are used to compute IS investments?

problem 4: How must IS Investments be computed?

problem 5: When should the value of IS investments be measured quantitatively or qualitatively?

problem 6: What is the role of 'gut instinct' in the IS evaluation?

Please try to link all problems to joint each other, and use references if is possible; it can be any where and as well give your opinion to all problems.