Leaks are the privilege of those people with good friends in high places. Many leaks at the EU level concern information, proposals and reports that are perfectly public in Member States with transparent administrations. Leaking may well promote a certain partial openness. But it can also lead to corrupt behaviour. There is no such thing as a free lunch.
Leaks always have a purpose.
Otherwise, they wouldn't exist. For a lobby organisation or a law firm, to guarantee a permanent flow of information from Mr. Leak means that the machinery must be well oiled with lunches, dinners and even friendly sailing tours. However innocent this may seem to some, to me it inevitably smells of corruption. In a democratic society based on the rule of law, it would be better that the rules on transparency be such that they are sound and well balanced, promote transparency and that they are fully respected. Those documents that are confidential for a good reason should stay confidential.