There is another reason for using that term and that is the similarity in scale, if not detail, of what was easily the biggest political scandal of the last century - Watergate. The only thing that keeps this scandal slightly under par from that scandal is the loss of the head of the government. However, this scandal isn't finished yet and, improbable as it may seem, David Cameron could yet end up as an ex Prime Minister sooner than he expected.
It is not just that the scale of the scandal that is important though, it is the issues that underlie that are of the most importance. At it's heart, once the rhetoric has been stripped away, Hackgate is a scandal about police corruption and the implication that the most senior members of our government are involved either implicitly or explicitly.
There have been calls, most notably from Conservative MP's and right wing commentators, for the press, public and particularly the Prime Minister to move on from the scandal and focus on what they consider to be bigger and more important issues. They are wrong. There is, quite simply, nothing more important to the fabric of our society than Law & Order.
Without law & order we cannot function. We cannot trade and our current financial problems will pale into insignificance compared to the hell we would soon enter. If you want an example of this, consider some of the worst places to live on earth and their approach to law & order. I know this sounds all very dramatic but it's essential that no amount of corruption is tolerated, no matter how small for indeed, the natural progression of minor corruption is major corruption.
When that corruption is either carried out or tolerated by those who draft our laws, it is all the more serious and all the more attention must be shone on it. We must not stop until everything there is to now about this scandal is uncovered and examined in the full glare of public scrutiny.
Politicians saying we need to move on need to remind themselves what is really at stake.