Based on your own research on the use of e-commerce/e-procurement in the public and private sectors, what

Question:

Based on your own research on the use of e-commerce/e-procurement in the public and private sectors, what are those elements that you consider to be unique to each?
How would you describe the benefits that accrue from implementation of e-commerce/e-procurement in an enterprise?
How would you describe the pitfalls associated with the use of e-commerce/e-procurement in these sectors?