So 4.5 percent of the world's population, or 30 percent of the world's economic power (source: Wolfram, 2006), is going on holiday for a couple of days.

Does the Apple app cart need to be thus upset?

Are the Beatles reunited for a US tour?

Whatever, throughout the day, we've seen an increasing amount of publishers slashing the price of their iPhone games.

However, as with animals in that fictional farm, not all price cuts are as equal as others.

First up was underperforming publisher Konami, which cut the price of all its games to 99c (or local equivalent). It was rewarded with Metal Gear Solid Touch bouncing up the charts. Of course, this was to be expected as it was previously priced $5.99. It's not clear that the game's revenue have gone up more than six fold however.

Things got more interesting with App Store big hitters EA Mobile and Gameloft getting in on the act.

EA was the more utilitarian of the two, cutting the price of almost all its games by up to 50 percent.

Gameloft was more calculating, only taking the axe to the price of old or non-charting games. Still it went for broke with a 99c standard.

Smaller publishers - such as Cobra Mobile, IUGO and Pangea - also took advantage of the opportunity with various sale options.

These games also tended to be old releases. Notably IUGO didn't cut the price of charting game Implode! or the just released A.D.D.

And the wider issue - as with all sales - whether dropping the price of games is rewarded by an equivalent (or moreso) jump in revenue remains unclear.

And, obviously, the more games on sale, the less likely this is to occur. Even 50 million iDevice owners have only so much free time. 

Hence it will be interesting to see how all this Black Fridaying impacts on the Top Grossing charts: something PocketGamer.biz will no doubt be pondering during its coming turkey, pumpkin and pecan pie-free days.